Voice Over IP Manual

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All equipment/devices used in the LAN setup must have an IP address assignment. An IP address assigns a unique address for each device. There are two types of IP addresses: Private and Global. A Private IP address is not accessible through the internet; a Global IP address can be accessed through the internet. In most cases, a Private address is used, as LAN devices are not usually directly connected to the internet. Private addresses are usually taken from the following ranges:

Class A 10.0.0.0 ~ 10.22.255.255 Class B 172.16.0.0. ~ 172.31.255.255 Class C 192.168.0.0 ~ 192.168.255.255

A Public address is normally only used when a device is directly connected to the internet. This is unlikely in the case of the equipment. If public addressing is used, the numbers are normally allocated by an ISP. Subnet Mask

As the IP address includes information to identify both the network and the final destination, the Subnet Mask sets apart the network and destination information. The default subnet masks are:

Class A 255.0.0.0 Class B 255.255.0.0 Class C 255.255.255.0

The Subnet Mask is made up of four groups of numbers. When a group contains the number 255, the router ignores or masks that group of numbers in the IP address as it is defining the network location of the final destination. For example, if the IP address is: 172.16.0.10 and the Subnet Mask used is Class B (255.255.0.0), the first two groups of numbers (172.16) are ignored once they reach the proper network location. The next two groups (0.10) are the final destination within the LAN to which the connection is to be made.

For sub-netted networks, the subnet mask may be different from the default subnet masks listed above.

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General IP Configuration

The voice quality of VoIP depends on variables such as available bandwidth, network latency, and quality of service initiatives (QOS), all of which are controlled by the network and internet service providers. Because these variables are not in NEC control, it cannot guarantee the performance of the users IP based voice solution.

Therefore, NEC recommends connecting the VoIP equipment through a local area network using private IP addresses. For a network to be suitable for VoIP it must pass specific requirements. To make sure that the site meets these requirements an IP ready check and a site survey must be completed at each site before VoIP implementation.

One way delay must not exceed 100 ms Round Trip delay must not exceed 200 ms Jitter must not exceed 100ms

Packet loss must not exceed 1% Data switches must be manageable Routers must provide QOS

Adequate bandwidth for estimated VoIP traffic (see bandwidth calculator)

Depending on how QOS policies are built in the network, assignments might be needed in the SV8100 programming.

1.1 General Information

General Information

Introduction

The UNIVERGE SV8100 system uses IP for various applications.

This section describes the procedure for connecting the UNIVERGE SV8100 system to an existing data network and configuring TCP/IP. This is the first step in implementing VoIP and other IP applications.

Network Addressing Overview

Before connecting the system to a data network, it is necessary to ob tain the relevant IP Addressing information. This information is supplied b y the IT Manager or Network Administrator at the customer site.

IP Addressing

All equipment/devices used in the LAN setup must have an IP address assignment. An IP address assigns a unique address for each device. There are two types of IP addresses: Private and Global. A Private IP address is not accessible through the internet; a Global IP address can be accessed through the internet. In most cases, a Private address is used, as LAN devices are not usually directly connected to the internet. Private addresses are usually taken from the following ranges:

Class A 10.0.0.0 ~ 10.22.255.255 Class B 172.16.0.0. ~ 172.31.255.255

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Class C 192.168.0.0 ~ 192.168.255.255

A Public address is normally only used when a device is directly connected to the internet. This is unlikely in the case of the equipment. If public addressing is used, the numbers are normally allocated by an ISP. Subnet Mask

As the IP address includes information to identify both the network and the final destination, the Subnet Mask sets apart the network and destination information. The default subnet masks are:

Class A 255.0.0.0 Class B 255.255.0.0 Class C 255.255.255.0

The Subnet Mask is made up of four groups of numbers. When a group contains the number 255, the router ignores or masks that group of numbers in the IP address as it is defining the network location of the final destination. For example, if the IP address is: 172.16.0.10 and the Subnet Mask used is Class B (255.255.0.0), the first two groups of numbers (172.16) are ignored once they reach the proper network location. The next two groups (0.10) are the final destination within the LAN to which the connection is to be made.

For sub-netted networks, the subnet mask may be different from the default subnet masks listed above.

General IP Configuration

The voice quality of VoIP depends on variables such as available bandwidth, network latency, and quality of service initiatives (QOS), all of which are controlled by the network and internet service providers. Because these variables are not in NEC control, it cannot guarantee the performance of the users IP based voice solution.

Therefore, NEC recommends connecting the VoIP equipment through a local area network using private IP addresses. For a network to be suitable for VoIP it must pass specific requirements. To make sure that the site meets these requirements an IP ready check and a site survey must be completed at each site before VoIP implementation.

One way delay must not exceed 100 ms Round Trip delay must not exceed 200 ms Jitter must not exceed 100ms

Packet loss must not exceed 1%

Data switches be full-duplex and manageable Routers must provide QOS

Adequate bandwidth for estimated VoIP traffic (see bandwidth calculator)

Depending on how QOS policies are built in the network, assignments might be needed in the SV8100 programming.

1.2 QoS Settings

SV8100 QoS

When transmitting Voice over an IP network it is important to consider Quality of Service (QoS). This is the perceived quality of speech after being transmitted over the network.

It is recommended that you consult the "Voice over IP Reference Guide" as this discusses the issues that should be considered when implementing a VoIP network.

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QoS is implemented by the network hardware, not the SV8100.

The SV8100 can "mark" its data with appropriate tags and the network equipment has to be configured to prioritise that data over other (non VoIP) data.

The Network Administrator should supply the SV8100 installer with the relevant QoS settings. QoS can be implemented at Layer 2 (within the Ethernet Frame) or Layer 3 (within the IP packet). Wizard – Advanced Items/VoIP/QoS Settings/Layer 2 QoS and VLAN. (PRG84-09)

QoS is implemented at Layer 2 by using VLAN (IEEE 802.1p/Q) tags. Choose which interface to be programmed:

Interface 1 = CP00 Ethernet connection Interface 2 = IPL VoIP connection For any VoIP application interface 2 is used.

VLAN Mode - By default the system does not use VLAN tags so these have to be enabled. Once enabled, all frames transmitted by the CP00 and IPL cards use the VLAN tags. VLAN ID - This is the VLAN that the system belongs to. Valid values are 0 to 4094.

Priority - The priority should be configured between 0 (no prioritisation) to 7 (highest priority).

Wizard – Advanced Items/VoIP/QoS Settings/Layer 3 QoS. (PRG84-10)

This is the most common form of QoS. It utilises the Type of Service (ToS) field within the IP packets, and can be configured based on two different QoS standards: IP Precedence and Differentiated Services (Diffserv).

Although IP Precedence and Diffserv are both supported on the SV8100, it is becoming more common to use Diffserv only. The two methods of QoS are interoperable (IP precedence values can be mapped to Diffserv values).

The ToS value can be set for each type of VoIP packet.

ToS Mode – Choose Disabled, IP Precedence or Diffserv depending on the network requirements. IP Precedence Priority – Only use if the ToS Mode is set to IP Precedence. Enter the required IP Precedence value from 0 to 7.

IP Precedence Delay – Normally this value is not required. Use only IP Precedence Priority (above). IP Precedence Throughput – Normally this value is not required. Use only IP Precedence Priority (above). IP Precedence Reliability – Normally this value is not required. Use only IP Precedence Priority (above). IP Precedence Cost – Normally this value is not required. Use only IP Precedence Priority (above). Diffserv – Use only if the ToS Mode is set to Diffserv. Enter the required Diffserv value from 0 to 63. Below is a table showing which QoS item is required for each particular VoIP feature of the SV8100.

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Be aware that the RTP/RTCP Layer 3 QoS setting is common to all signalling protocols so if there are several VoIP protocols being used on the same system the speech cannot have different QoS values per protocol.

E.g. If an SV8100 is programmed to use NetLink and SIP trunks, the speech will have the same QoS value whether a NetLink call is in progress or a SIP trunk call is in progress. The signalling for both protocols, however, can have different values.

1.3 IP Address Collision

IP Address Collision

Description

This is a new feature for R5 SV8100 system software.

The system sends Gratuitous ARP (G-ARP) requests to check whether any other devices in the network have the same IP address as the CCPU, the IPL and the VoIPU Gateways. If an IP address collision is detected an alarm can be triggered.

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SV8100 Programming

The only programming required is the Alarm setup, the Alarm Display Telephone and email notification if required.

Set up the parameters of the Alarm using Alarm number 57 in Wizard – Advanced Items/Maintenance/ Alarms/System Alarm Setup (PRG90-10).

Assign the extension number for the Alarm Display Telephone in Wizard – Advanced Items/Maintenance/ Alarms/System Alarm Display Setup (PRG90-50-01).

SV8100 Requirements

The following information provides requirements for IP address collision detection. Main Software

IP address collision detection is supported with V5.00 or higher release of the SV8100. Hardware

The SV8100 requires the following hardware: CD-CP00 (V5.00 or higher)

PZ-32IPL, PZ-64IPL, PZ-128IPL

The Alarm can be displayed on the following terminal: DT300

DT700 DTermIP Capacity

Up to ten IP addresses can be checked for duplication using this feature. The ten IP addresses are the CCPU, the IPL and up to eight VoIPU Gateway addresses.

Operation

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Conditions/Comments

The collision alarm will continue until the IP address conflict is resolved. The collision detection will only occur in the same subnet as the SV8100. The G-ARP packets are sent every 5 minutes, this timer is not programmable.

If multiple IP address collisions are detected only one will be shown on the Alarm Display Telephone. The table below shows information about alarm priorities.

Command to be checked Alarm display name

Alarm display priority

PRG 10-12-01 Collision(01) 10 PRG 10-12-09 Collision(02) 1 PRG 84-26-01 GW 1 Collision(03) 2 PRG 84-26-01 GW 2 Collision(04) 3 PRG 84-26-01 GW 3 Collision(05) 4 PRG 84-26-01 GW 4 Collision(06) 5 PRG 84-26-01 GW 5 Collision(07) 6 PRG 84-26-01 GW 6 Collision(08) 7 PRG 84-26-01 GW 7 Collision(09) 8 PRG 84-26-01 GW 8 Collision(10) 9

1.4 IPL Blades

IPL Differences

Description

The IPLB VoIPDB is a replacement for the IPLA VoIPDB.

The main differences are the number of IP address required for the VoIP Gateways is reduced from 8 to 1 and there is an improvement to the echo canceller.

Note: The IPLB VoIPU card is not available until June 2011.

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IP Address Requirements

IPLB Requirements

Card Type Required IP Addresses Notes

32IPLB 2 One IP address is required regardless of the

number of DSP’s. One further IP address is required for registration/signalling

64IPLB 2

128IPLB 2

IPLA Requirements

Card Type Required IP Addresses Notes

32IPLA 3 One IP address is required per 16 DSP’s. One

further IP address is required for registration/ signalling

64IPLA 5

128IPLA 9

Which IPL is Installed

There are several ways to identify which IPL is installed in an SV8100, this varies depending on whether you use a handset, PC Pro or Web Pro.

Handset

On a DT300 or DT700 (with display) press ‘Feature 4’ The display shows either:

E.g. VoIPDBTYPE IPLA 128 MAC: 00:60:B9:00:00:00 DSP:Active/Reserved 000/000 Or E.g. VoIPDBTYPE IPLB 128 MAC: 00:60:B9:00:00:00 DSP:Active/Reserved 000/000 PC Pro

Take a full download from the SV8100 and navigate to the System Configuration screen The IPL type and size can be seen in the Version Information box:

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This shows that an IPLA128 is installed. This shows that an IPLB64 is installed. If NetLink is configured PC Pro will only show the IPL information of the CPU that it is connected to.

Web Pro

Connect to the SV8100 and navigate to System Data, PRG90-34

If the above items (circled in red) are populated then this indicates that an IPLB is installed. If they are not populated then this indicates that an IPLA is installed.

Note: PRG90-34 can be used to identify whether an IPLA or IPLB is installed using handset programming or PC Pro as well as Web Pro.

Jitter Buffer

The jitter buffer size has been increased on the IPLB compared with the IPLA. The table below shows the adjustment.

Codec Supported RTP Packet

Size (VIF Size)

IPLA Jitter Buffer Max Size (ms)

IPLB Jitter Buffer Max Size (ms) G.711 10, 20, 30, 40ms 160 255 G.726 10, 20, 30, 40ms 160 255 G.729A/B 10, 20, 30, 40, 50, 60ms 270 300 G.723.1 30, 60ms 270 300 G.722 10, 20, 30, 40ms 160 255 iLBC 20, 30, 40ms 160 255

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T.38 RTP 10, 20, 30, 40ms Same as used RTP codec Same as used RTP codec

Other information

IPLB NIC Settings

The IPLB has a programming option to alter its network speed and duplex settings (PRG10-12-11). The IPLB does not support half duplex so do not use these options.

If the IPLB is set to a static value the network switch port must also be set to the same static value.

Voice Activity Detection (VAD)

VAD is not supported on the IPLB for the following codecs: G.722

G.723 iLBC

ICMP Redirect

The IPLB will follow the programming option for ICMP Redirect.

The IPLA ignores the programming option for ICMP Redirect, it is always disabled.

LED Indications

IPLA LED Indications

LED Function LED Status Operation Status

Link 10/100 10Base-T/100Base-TX link speed indicator

On Red 100Base-TX link up

Link 1000 1000Base-T link speed indicator

On Red 1000Base-T link up

DUPLEX Duplex Status On Yellow Full duplex operation

Activity Link activity or data transmission and

reception

On Green Link up complete

IPLA Data Activity Indications

LED

Link Up

Auto Negotiation Fixed Mode

1Gbps 100Mbps 10Mbps 1Gbps 100Mbps 10Mbps

Half Full Half Full Half Full Half Full

ACT ON ON ON ON ON ON ON ON ON ON

Duplex ON OFF ON OFF ON ON OFF ON OFF ON

Link 1G ON OFF OFF OFF OFF ON OFF OFF OFF OFF

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IPLB LED Indications

LED Function LED Status Operation Status

On Red 10Base-T link up

Link 100 100Base-TX link speed indicator

On Red 100Base-TX link up

On Yellow 1000Base-T link up

ACT Link activity or data transmission and

reception

On Green Link up complete LED flashes when data

is transmitted or received

LED

Operation status

ACT LINK1000 LINK100 LINK10

Off Off Flash Flash Internal Error (Hardware Error)

Off On Flash Flash

On On Flash Flash

On Off Flash Flash State of half duplex transmission (Not supported) Please change Hub or Switch port to full duplex transmission.

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IPLB Layout Information

IPLA Layout

Information

1.4.1 IPL Information

IPL Information

When assigning the IP addresses to the IPL card, the addresses must be in the same network (subnet). The CPU Ethernet connection requires a separate IP address in a different network (subnet).

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When you have an IPL card attached to the CPU, the CPU NIC is no longer required. All connections that previously terminated to the CPU NIC card can now be terminated to the IPL NIC.

For example, PC Pro, Web Pro, SMDR, etc. terminate to the IPL NIC card, when installed. Both the IPL and CPU NIC share the same default gateway assignment. The default gateway command is used by both NICs, allowing only one device, IPL or CPU, to route outside of its own network.

The programming information can be found in the relevant section of the IP Manual.

When an IP Phone or IP Trunk calls a legacy device (Keyphone, SLT, trunk) the speech has to be converted from IP to TDM technologies. The IPL card provides this function. The IPL card has a number of DSP resources on board; each one can convert a speech channel from IP to TDM and vice versa.

Note: It is possible for IP phones to talk directly to other IP phones without using any DSP’s. This is referred to as Peer to Peer communication.

Available Codec’s

A CODEC is a standard for converting an analogue signal to digital. This conversion process is handled by the DSP (Digital Signal Processors) on the IPL card.

Each CODEC has different voice quality and compression properties. The correct choice of CODEC will be based on the amount of bandwidth available, the amount of calls required and the voice quality required. There are several different codec’s available for use on the SV8100 as listed below.

G.711 (64kbps) G.722 (64kbps) G.726 (32kbps) iLBC (13.33kbps)* G.729 (8kbps) G.723 (5.3kbps)*

*To use either of these two codec’s a programming command must be altered (set Codec Mode to G.723/

iLBC in Wizard – Advanced Items/VoIP/General Settings/VoIP Configuration/IPL Basic Setup. (PRG84-27-02).

If this command is enabled the number of VoIP resources will be reduced if using an IPLA VoIP card, the IPLB does not have this limitation. See the IPLA DSP Information or IPLB DSP Information page.

Not all of these codec’s are available for all VoIP applications, refer to the relevant section of this manual for further information.

VoIP Gateways

The number of IP addresses required for the VoIP Gateways depends on whether there is an IPLA VoIP card installed or an IPLB VoIP card installed. Please refer to the IPL General Information page for further information.

Ethernet Status

The connection status of the IPL Ethernet connection can be determined by observing the four LED’s on the IPL VoIP card. The LED indications depend on whether there is an IPLA VoIP card installed or an IPLB VoIP card installed. Please refer to the IPL Differences page for further information.

1.4.2 IPL Basic Setup

IPL Basic Setup

Below is information about IPL Basic Setup.

Please refer to the comments section as some of the items only apply if an IPLB VoIP card is installed rather than an IPLA VoIP card.

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PRG84-27

Item No Name Data Default Comments

01 DTMF Relay 0: Disabled

1: In-Band 2: Out of Band

0 Used for IPLA and IPLB

02 Setup CODEC Mode 0:default

1:Mode1(G723/iLBC)

0 IPLB does not restrict the number of available DSP’s if this item is enabled. For IPLA restrictions please refer to IPL DSP Information page

03 SRTP Mode Setup 0:disable

1:enable

0 IPLB does not restrict the number of available DSP’s if this item is enabled. For IPLA restrictions please refer to IPL DSP Information page

06 H.245 Port 10100 10100 Used for IPLA and IPLB

07 Preparation Complete Port

4000 4000 Used for IPLA and IPLB

08 DTMF Duration(Inband) 0:follow RFC2833 25-2000(ms)

0 Used only for IPLB

09 DTMF Pause 0:follow RFC2833

25-2000(ms)

0 Used only for IPLB

10 DTMF Twist Positive Level 0-24(dB) 5 Used only for IPLB 11 DTMF Twist Negative

Level

0-24(dB) 0 Used only for IPLB

12 DTMF Duration(Outband) 30-2000(ms) 100 Used only for IPLB

13 DTMF Level 1-61(-36db -24db) 1: -36 db 2: -35 db 37: 0 db 60: 23 db 61: 24 db 25(-12db)

Used only for IPLB

14 ICMP Redirect 0...enable

1...disable

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1.4.3 IPLA

IPLA DSP Information

With an IPLA VoIP card installed it is possible, depending on system programming, that the number of VoIP resources will be lower than the actual number available on the card.

This will occur if sRTP (encryption) is enabled or if the iLBC/G.723 codec’s are made available. See the tables below for the actual number of available resources.

IPLA Resource Information

32IPLA G.711 G.722 G.726 G.729 G.723 iLBC G3 Fax PRG84-27-02 Enabled sRTP Disabled 32 32 32 32 24 24 32 sRTP Enabled 32 24 24 24 16 16 28 64IPLA G.711 G.722 G.726 G.729 G.723 iLBC G3 Fax PRG84-27-02 Enabled sRTP Disabled 64 64 64 64 48 48 64 sRTP Enabled 64 48 48 48 32 32 56 128IPLA G.711 G.722 G.726 G.729 G.723 iLBC G3 Fax PRG84-27-02 Enabled sRTP Disabled 128 128 128 128 96 96 128 sRTP 128 96 96 96 64 64 112

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Enabled

1.4.4 IPLB

IPLB DSP Information

With the IPLB VoIP card there are no channel limitations regardless of which codec is used or whether sRTP is enabled. The tables below indicate this improvement.

Note: The SV8100 requires software V5.0 or later to run the IPLB card. IPLB Resource Information

32IPLB G.711 G.722 G.726 G.729 G.723 iLBC G3 Fax PRG84-27-02 Enabled sRTP Disabled 32 32 32 32 32 32 32 sRTP Enabled 32 32 32 32 32 32 32 64IPLB G.711 G.722 G.726 G.729 G.723 iLBC G3 Fax PRG84-27-02 Enabled sRTP Disabled 64 64 64 64 64 64 64 sRTP Enabled 64 64 64 64 64 64 64 128IPLB G.711 G.722 G.726 G.729 G.723 iLBC G3 Fax PRG84-27-02 Enabled sRTP Disabled 128 128 128 128 128 128 128 sRTP Enabled 128 128 128 128 128 128 128

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1.4.4.1 IPLB Echo Canceller Setup

IPLB Echo Canceller Setup

This command is only used if an IPLB is installed. PRG84-31 Type No 1...H.323 Trunk 2…DtermIP Type 1 3…DtermIP Type 2 4…DtermIP Type 3 5…DtermIP Type 4 6…DtermIP Type 5 7...AspireNet 8...SIP Trunk 9...SIP Extension 10...K-CCIS 11...DT700 Type 1 12...DT700 Type 2 13...DT700 Type3 14...DT700 Type4 15...DT700 Type5 16...NetLink

01 TDM Echo Canceller mode

0…disable 1…enable

1 Enable/Disable the echo canceller on the receiving (TDM) side.

02 TDM Echo Canceller NLP mode (2W)

0...disable 1...enable

2...Long Echo Path Mode

3...Long Echo Path Auto Detect Mode

1 Use to select echo compression mode for remaining echo.

Used when PRG84-31-01 is set to 1.

03 TDM Echo Canceller ComfortNoise mode

1 Enable/Disable comfort Noise as background noise.

Used when PRG84-31-01 is set to 1. *

04 TDM Echo Canceller NLP Threshold

0-15 12 Use to setup threshold level

when using echo compression mode.

Used when Program 84-31-02 is set to 1.

05 TDM Echo Canceller Tail Displacement

0-89(0ms 890ms) 0 Used when Program 84-31-01 is set to 1.

06 TDM Echo canceller tail length 1…32ms 2...48ms 3…64ms 4...80ms 5...96ms

7 Use to select length of echo. Used when Program 84-31-01 is set to 1.

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6...112ms 7…128ms 07 TDM Echo Canceller

Default ERL Level

0-6(-9db 9db) 0...-9 db 1...-6 db 2...-3 db : 5...6 db 6...9 db

5(6db) Used when Program 84-31-01 is set to 1. 08 TDM Echo Canceller Echo Type 0...disable 1... Line echo canceller 2...Acoustic echo canceller

1 Use to select echo canceller type.

1: Based upon ITU-T G.168 2: Based upon ITU-T G.167 Used when Program 84-31-01 is set to 1. 09 TDM Max ERLE 0-10(24-54db) 0...24 db 1...27 db : 9...51 db 10...54 db

2 Use to select maximum echo return loss level.

10 TDM Tx Level Control 0...disable 1...TxLevelControl mode 2...TxAutomaticLevelCo ntrol mode 3...TxHLC (HighLevelCompensati on) mode

3 Use to select Transmit level control mode. 11 TDM Tx LevelControl Level 0-16(-24 24db) 0...-24 db 1...-21 db 2...-18 db : 8...0 db : 14...18 db 15...21 db 16...24 db

8 Use to select Transmit voice level.

Used when Program 84-31-10 is set to 1. 12 TDM Tx AutomaticLevelControl Level 0-12(-42 -6 dBm) 0...-42 dBm 1...-39 dBm : 7...-21 dBm : 11...-9 dBm 12...-6 dBm

7 Use to select target gain. Used when Program 84-31-10 is set to 2.* 13 TDM Tx HLC Threshold 0-42(-42 0dBm) 0...-42 dBm 1...-41 dBm : 42...0 dBm

41 Use to select HLC threshold level.

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14 TDM Tx Gain Compression mode

1 Enable/Disable Transmit Gain Compression. 15 TDM Tx Gain Compression Threshold 0...-42 dBm 1...-41 dBm : 42...0 dBm

41 Use to select Transmit Gain Compression Threshold level. Used when Program 84-31-14 is set to 1.

16 TDM Rx Level Control 0...disable 1...RxLevelControl mode

2...RxAutomaticLevelC ontrolFlag

0 Use to select Receive level control mode.* 17 TDM Rx LevelControl Level 0-16(-24 24db) 0...-24 db 1...-21 db 2...-18 db : 8...0 db : 14...18 db 15...21 db 16...24 db

8 Use to select Receive voice level.

Used when Program 84-31-16 is set to 1.* 18 TDM Rx AutomaticLevelControl Level 0-12(-42 -6 dBm) 0...-42 dBm 1...-39 dBm : 7...-21 dBm : 11...-9 dBm 12...-6 dBm

7 Use to select target gain. Used when Program 84-31-16 is set to 2.*

19 RTP Echo Canceller mode

0…disable 1…Enable

0 Disable/Enable the echo canceller on sending (RTP) side. 20 RTP Echo Canceller NLP mode 0...disable 1...enable

0 Disable/Enable the echo compression mode for remaining echo.

21 RTP Echo Canceller ComfortNoise mode

1 Enable/Disable comfort Noise as background noise.

Used when Program 84-31-19 is set to 1.*

22 RTP Echo Canceller NLP Threshold

0-15 12 Use to setup threshold level

when using echo compression mode. Used when Program 84-31-19 is set to 1.

23 RTP Echo Canceller Tail Displacement

0-89(0ms 890ms) 0 Use to set up off-set time of echo canceller window. Used when Program 84-31-19 is set to 1.*

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Tail Length 2...48ms 3…64ms 4...80ms 5...96ms 6...112ms 7…128ms

25 RTP Echo Canceller Default ERL Level

0-6(-9db 9db) 0...-9 db 1...-6 db 2...-3 db : 5...6 db 6...9 db

5(6db) Used when Program 84-31-19 is set to 1.*

26 RTP Echo Canceller Echo Type

0...disable

1...Line echo canceller 2...Acoustic echo canceller

0 Use to select echo canceller type.

1: Based upon ITU-T G.168 2: Based upon ITU-T G.167 Used when Program 84-31-19 is set to 1. 27 RTP Max ERLE 0-10(24-54db) 0...24 db 1...27 db : 9...51 db 10...54 db

2(30db) Use to select maximum echo return loss level.

28 RTP Tx Level Control 0...disable 1...TxLevelControl mode 2...TxAutomaticLevelCo ntrol mode 3...TxHLC (HighLevelCompensati on) mode

0 Use to select Transmit level control mode. 29 RTP Tx Level Control Level 0-16(-24 24db) 0...-24 db 1...-21 db 2...-18 db : 8...0 db : 14...18 db 15...21 db 16...24 db

8 Use to select Transmit voice level.

Used when Program 84-31-28 is set to 1. 30 RTP Tx AutomaticLevelControl Level 0-12(-42dBm -6 dBm) 0...-42 dBm 1...-39 dBm : 7...-21 dBm : 11...-9 dBm 12...-6 dBm

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31 RTP Tx HLC Threshold 0-42(-42dBm 0dBm) 0...-42 dBm

1...-41 dBm :

42...0 dBm

42 Use to select HLC threshold level.

32 RTP Tx Gain

Compression mode

0 Enable/Disable Transmit Gain Compression. 33 RTP Tx Gain Compression Threshold 0-42(-42dBm 0dBm) 0...-42 dBm 1...-41 dBm : 42...0 dBm

42 Select Transmit Gain

Compression Threshold level. Used when Program 84-31-32 is set to 1.

34 RTP Rx Level Control 0...disable 1...RxLevelControl mode

2...RxAutomaticLevelC ontrolFlag

0 Use to select the Receive level control mode.* 35 RTP Rx LevelControl Level 0-16(-24db 24db) 0...-24 db 1...-21 db 2...-18 db : 8...0 db : 14...18 db 15...21 db 16...24 db

8 Use to select the Receive voice level.

Used when Program 84-31-34 is set to 1.* 36 RTP Rx AutomaticLevelControl Level 0-12(-42 -6 dBm) 0...-42 dBm 1...-39 dBm : 7...-21 dBm : 11...-9 dBm 12...-6 dBm

37 TDM Echo Canceller NLP mode (4W)

2...Long Echo Path Mode

3...Long Echo Path Auto Detect Mode

1 Use to select the echo compression mode for remaining echo.

* Do not change these settings without guidance or instruction from NEC Technical Support.

1.4.4.2 IPLB SIP MLT Codec Information

IPLB SIP MLT Codec Information

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IPLA. The changes are indicated in red.

Note: The SV8100 requires software V5.0 or later to run the IPLB card.

Wizard – Advanced Items/VoIP/Extensions/DT700 Setup/DT700 Codec. (PRG84-24)

04 G.711 jitter buffer min 0-255ms 30 0-160 values are valid for IPLA. If you set more 160ms, then buffer size is 160ms

05 G.711 jitter buffer average 0-255ms 60 0-160 values are valid for IPLA. If you set more 160ms, then buffer size is 160ms 06 G.711 jitter buffer max 0-255ms 120 0-160 values are valid for

IPLA. If you set more 160ms, then buffer size is 160ms 09 G.729 jitter buffer min 0-300ms 30 0-270 values are valid for

IPLA. If you set more 270ms, then buffer size is 270ms

10 G.729 jitter buffer average 0-300 ms 60 0-270 values are valid for IPLA. If you set more 270ms, then buffer size is 270ms

11 G.729 jitter buffer max 0-300ms 120 0-270 values are valid for IPLA. If you set more 270ms, then buffer size is 270ms 17 jitter buffer mode 1...Fixed

2...Self adjusting (silence period) 3...Self adjusting

3 2:Self adjusting(silence period) is not valid for IPLB. If you set this value, operate same as 3: Self adjusting.

19 Idle Noise Level 5000-7000

(5000dbm -7000dbm)

7000 Not used IPLB-A.

20 Echo Canceller Mode 0…Disable 1…Enable

1 Not used IPLB-A. Echo canceller setup is 84-31.

21 Signal Limiter 1…Mode0

2…Mode1 3...Mode2

(27)

4...Mode3 5...Mode4 6...Mode5

22 Echo canceller NLP mode 0 … 2 wire and 4 wire 1 … 2 wire only

1 Not used IPLB-A. Echo canceller setup is 84-31. 24 Echo Canceller NLP Noise Setting 0… 1… 0…Adaptive 1…Fixed

0 Not used IPLB-A. Echo canceller setup is 84-31. 26 TX Gain 0-40 (-14dbm ~ +14dbm) 0…-20 dbm 1…-19 dbm : 20…0 dbm : 39…19 dbm 40…20 dbm

27 RX Gain 20 Not used IPLB-A. Echo

canceller setup is 84-31.

33 G.722 VAD mode 0…Disable

1…Enable

0 Not used IPLB-A

34 G.722 jitter buffer min 0-255ms 30 0-160 values are valid for IPLA. If you set more 160ms, then buffer size is 160ms 35 G.722 jitter buffer average 0-255ms 60 0-160 values are valid for

36 G.722 jitter buffer max 0-255ms 120 0-160 values are valid for IPLA. If you set more 160ms, then buffer size is 160ms

(28)

38 DTMF Level mode 0... VOIPU 1... Mainsoft

0 Used only for IPLB-A

39 DTMF Level High 0...disable

1...-33dBm :

28...-6dBm

40 DTMF Level Low 0...disable

1...-33dBm :

28...-6dBm

1.4.4.3 IPLB DTermIP Codec Information

IPLB DtermIP Codec Information

Below is a list of commands that have been altered, added or removed when using an IPLB instead of IPLA. The changes are indicated in red.

Wizard – Advanced Items/VoIP/Extensions/DTermIP Extension/DTermIP Codec Setup. (PRG84-11)

Item

No

Name

Data

Defaul

t

Comments

04 G.711 Jitter Buffer

(min)

0-255ms 30 0-160 values are valid for

05 G.711 Jitter Buffer (average)

06 G.711 Jitter Buffer (max)

0-255ms 120 0-160 values are valid for IPLA. If you set more 160ms, then buffer size is 160ms

09 G.729 Jitter Buffer (min)

(29)

0-300 ms 60 0-270 values are valid for IPLA. If you set more 270ms, then buffer size is 270ms

14 G.723 Jitter Buffer (min)

17 jitter buffer mode 1...Fixed

2...Self adjusting(silence period)

3...Self adjusting

3 2:Self adjusting(silence period) is not valid for IPLB. If you set this value, operate same as 3: Self adjusting. 19 Idle Noise Level 5000-7000

(-5000dbm -7000dbm)

7000 Not used IPLB-A. 20 Echo Canceller Mode 0…Disable

1…Enable

2…Mode1 3...Mode2 4...Mode3 5...Mode4 6...Mode5

6 Not used IPLB-A.

22 Echo canceller NLP mode

0 … 2 wire and 4 wire 1 … 2 wire only

1 Not used IPLB-A. Echo canceller setup is 84-31. 24 Echo Canceller NLP

Noise Setting

0…Adaptive 1…Fixed

0 Not used IPLB-A. Echo canceller setup is 84-31. 26 TX Gain 0-40 (-20dbm ~ + 20dbm) 0… -20 dbm 1… -19 dbm : 20… 0 dbm : 39… 19 dbm 40… 20 dbm

(30)

33 DTMF Level mode 0... VOIPU 1... Main software

0 Used only for IPLB-A 34 DTMF Level High 0...disable

1...-33dBm :

28...-6dBm

35 DTMF Level Low 0...disable 1...-33dBm :

28...-6dBm

1.4.4.4 IPLB SIP Extension Codec Information

IPLB SIP Extension Codec Information

Wizard – Advanced Items/VoIP/Extensions/SIP Extensions/SIP Codec Setup. (PRG84-19)

04 G.711 jitter buffer min 0-255ms 30 0-160 values are valid at IPLA. If you set more 160ms, then buffer size is 160ms

05 G.711 jitter buffer average

0-255ms 60 0-160 values are valid at IPLA. If you set more 160ms, then buffer size is 160ms

06 G.711 jitter buffer max 0-255ms 120 0-160 values are valid at IPLA. If you set more 160ms, then buffer size is 160ms

1…Enable

0 Not used IPLB-A

14 G.723 jitter buffer min 0-300 ms 30 0-270 values are valid at IPLA. If you set more 270ms, then buffer size is 270ms

(31)

average you set more 270ms, then buffer size is 270ms

16 G.723 jitter buffer max 0-300 ms 120 0-270 values are valid at IPLA. If you set more 270ms, then buffer size is 270ms

3 2: Self adjusting (silence period) is not valid for IPLB. If this value is used it will operate the same as 3: Self adjusting

(5000dbm to -7000dbm)

Not used IPLB-A.

0 … 2 wire and 4 wire

1 … 2 wire only

24 Echo Canceller NLP Noise Setting

0 Not used IPLB-A. Echo canceller setup is 84-31. 26 TX Gain 0-40 (-20dbm ~ +20dbm) 0…-20 dbm 1…-19 dbm : 20…0 dbm : 39…19 dbm 40…20 dbm 20

Not used IPLB-A. Echo canceller setup is 84-31.

27 RX Gain 20 Not used IPLB-A. Echo canceller

setup is 84-31.

1…Enable

0 Not used IPLB-A

(32)

44 iLBC VAD mode 0…Disable

1…Enable

0 Not used IPLB-A

45 iLBC jitter buffer min 0-255ms 30 0-160 values are valid at IPLA. If you set more 160ms, then buffer size is 160ms

46 iLBC jitter buffer average

0-160 values are valid at IPLA. If you set more 160ms, then buffer size is 160ms

47 iLBC jitter buffer max 0-255ms 120 0-160 values are valid at IPLA. If you set more 160ms, then buffer size is 160ms

52 Fax Max Rate 0...V.27ter, 2400 bps 1...V.27ter, 4800 bps 2...V.29, 7200 bps 3...V.29, 9600 bps 4...V.17, 12000 bps 5...V.17, 14400 bps

53 Fax Playout FIFO Nominal Delay

0-600 ms 300 Not used IPLB-A.

54 Fax packet size 20-48 bytes 20 Not used IPLB-A.

55 High speed data packet redundancy

1:10ms 2:20ms 3:30ms 4:40ms

4 Not used IPLB-A.

56 low Speed Data Redundancy

0-5 0 Only values 0-2 are valid for IPLB. If a value higher than 2 is used then the effective data is 2.

59 Maximum low speed data packetization

1-65535 bytes 1 Not used IPLB-A.

(33)

Timeout

63 DTMF Level High 0...disable 1...-33dBm :

28...-6dBm

64 DTMF Level Low 0...disable

1...-33dBm :

28...-6dBm

1.4.4.5 IPLB NetLink Codec Information

IPLB NetLink Codec Information

Wizard – Advanced Items/VoIP/Networking/NetLink/NetLink Codec. (PRG84-25)

04 G.711 jitter buffer min

06 G.711 jitter buffer max

0-300 ms 60 0-270 values are valid at IPLA. If you set more 270ms, then buffer size is 270ms

1…Enable

0 Not used IPLB-A.

(34)

3 2:Self adjusting(silence period) is not valid at IPLB. If you set this value, operate same as 3: Self adjusting

19 Idle Noise Level 5000-7000 (5000dbm -7000dbm)

20 Echo Canceller Mode

0…Disable 1…Enable

6 Not used IPLB-A.

1 … 2 wire only

0 Not used IPLB-A. Echo canceller setup is 84-31. 26 TX Gain 0-40 (-14db ~ +14db) 0…-20 dbm 1…-19 dbm : 20…0 dbm : 39…19 dbm 40…20 dbm 20

setup is 84-31.

1…Enable

0 Not used IPLB-A

(35)

1…Enable

0 Not used IPLB-A

47 iLBC jitter buffer max

50 DTMF Level mode 0... VOIPU 1... mainsoft

0 Used only for IPLB-A.

28...-6dBm

1.4.4.6 IPLB AspireNet Codec Information

IPLB AspireNet Codec Information

Wizard – Advanced Items/VoIP/Networking/AspireNet CVM/AspireNet Setup/AspireNet Codec Setup. (PRG84-12)

04 G.711 jitter buffer min 0-255ms 30 0-160 values are valid at IPLA. If you set more 160ms, then buffer size is 160ms 05 G.711 jitter buffer

average

06 G.711 jitter buffer max 0-255ms 120 0-160 values are valid at IPLA. If you set more 160ms, then

(36)

buffer size is 160ms

average

0-300ms 60 0-270 values are valid at IPLA. If you set more 270ms, then buffer size is 270ms 11 G.729 jitter buffer

max

average

max

0-300ms 120 0-270 values are valid at IPLA. If you set more 270ms, then buffer size is 270ms 17 jitter buffer mode 1...Fixed

3 2:Self adjusting(silence period) is not valid at IPLB. If you set this value, operate same as 3: Self adjusting

(5000dbm to -7000dbm)

1 Not used IPLB-A. Echo canceller setup is 84-31. 21 Signal Limiter VOIPDB-A1/IPLA/PZ

1…Mode0 2…Mode1 3...Mode2 4...Mode3 5...Mode4 6...Mode5

6 Not used IPLB-A.

0 … 2 wire and 4 wire 1 … 2 wire only

1 Not used IPLB-A. Echo canceller setup is 84-31. 24 Echo Canceller NLP

Noise Setting

(37)

average

max

0-255ms 120 0-160 values are valid at IPLA. If you set more 160ms, then buffer size is 160ms 39 DTMF Level mode 0... VOIPU

1... Mainsoft

28...-6dBm

1.4.4.7 IPLB SIP Trunk Codec Information

IPLB SIP Trunk Codec Information

Wizard – Advanced Items/VoIP/Networking/SIP Networking/Codec Setup. (PRG84-13)

(38)

1…Enable

0 Not used IPLB-A

16 G.723 jitter buffer max 0-300 ms 120 0-270 values are valid at IPLA. If you set more 270ms, then buffer size is 270ms

(5000dbm to -7000dbm)

6 Not used IPLB-A.

1 … 2 wire only

setup is 84-31.

1…Enable

0 Not used IPLB-A

(39)

1…Enable

0 Not used IPLB-A

52 Fax Max Rate 0...V.27ter, 2400 bps 1...V.27ter, 4800 bps 2...V.29, 7200 bps 3...V.29, 9600 bps 4...V.17, 12000 bps 5...V.17, 14400 bps

55 High speed data packet redundancy

1:10ms 2:20ms 3:30ms 4:40ms

4 Not used IPLB-A.

56 low Speed Data Redundancy

0-5 0 Only values 0-2 are valid for IPLB. If a value higher than 2 is used then the effective data is 2.

59 Maximum low speed data packetization

(40)

60 Transmit Network Timeout

10 - 32000sec 150 Not used IPLB-A.

28...-6dBm

1.4.4.8 IPLB H.323 Trunk Codec Information

IPLB H.323 Trunk Codec Information

Wizard – Advanced Items/VoIP/Networking/H.323 Networking/Basic Information Setup. (PRG84-01) Item

No

Name Data Default Comments

07 G.729 Jitter Buffer (min) 0- 300ms 30 0-270 values are valid for IPLA. If you set more 270ms, then buffer size is 270ms

09 G.729 Jitter Buffer (max) 0-300ms 120 0-270 values are valid for IPLA. If you set more 270ms, then buffer size is 270ms

(41)

2...Self adjusting (silence period)

3...Self adjusting

3 2: Self adjusting(silence period) is not valid for IPLB. If you set this value, operate same as 3: Self adjusting.

16 G.711 Jitter Buffer (min) 0-255ms 30 0-160 values are valid for IPLA. If you set more 160ms, then buffer size is 160ms

18 G.711 Jitter Buffer (max) 0-255ms 120 0-160 values are valid for IPLA. If you set more 160ms, then buffer size is 160ms

19 G.723 Jitter Buffer (min) 0-300ms 30 0-270 values are valid for IPLA. If you set more 270ms, then buffer size is 270ms

21 G.723 Jitter Buffer (max) 0-300ms 120 0-270 values are valid for IPLA. If you set more 270ms, then

(42)

buffer size is 270ms

(5000dbm ~ -7000dbm)

24 Echo Canceller Mode 0…Disable

1…Enable

2…Mode1

3...Mode2

4...Mode3

5...Mode4

6...Mode5

6 Not used IPLB-A.

26 Echo canceller NLP mode 0 … 2 wire and 4 wire

1 … 2 wire only

0…Adaptive

1…Fixed

30 TX Gain 0-40 (-20db ~ +20db)

0…-20 dbm

(43)

1…-19 dbm : 20…0 dbm : 39…19 dbm 40…20 dbm

canceller setup is 84-31.

36 Fax Max Rate 0...V.27ter, 2400 bps

1...V.27ter, 4800 bps

2...V.29, 7200 bps

3...V.29, 9600 bps

4...V.17, 12000 bps

5...V.17, 14400 bps

5 0,2,4 are not used for IPLB.-A.

39 FAX Modem Transmission

Level

0-13(0dBm ~ -13dBm) 9 Not used IPLB-A.

(44)

Detection Threshold 1...-33dBm

2...-43dBm

43 High-speed Signal Data (fax

picture signal) Packet Length

1:10ms

2:20ms

3:30ms

4:40ms

4 Not used for IPLB-A.

44 Low-speed Signal Data (FAX

Procedure Signal)

0-5 0 Values 0-2 are valid for IPLB. If you set more 2, then 2 will be used.

47 The Maximum, Low-speed

Signal Data (Size of Packet)

1-65535 bytes 1 Not used IPLB-A.

48 Network Transmission

Time-out

10-32000 sec 150 Not used IPLB-A.

49 Eflag Beginning Timer 0-65535 2600 Not used IPLB-A.

50 Eflag Stop Timer 0-65535 2600 Not used IPLB-A.

51 The Former Line Substitution

0...Disable

1...Enable

(45)

of Scanning Line

52 Eflag Setting at Head DIS 1

53 TFOP Protocol 1

54 NSF Superscription 0

55 ECM(Error Correction Mode)

1 Not used IPLB-A.

56 Enable Modified Read Code

1

57 NSF Country Code Setting 0-65535 0 Not used IPLB-A.

58 NSF Vendor Code Setting 0 Not used IPLB-A.

65 G.722 jitter buffer min 0-255ms 30 0-160 values are valid for IPLA. If you set more 160ms, then buffer size is 160ms

66 G.722 jitter buffer average 0-255ms 60 0-160 values are valid for IPLA. If you set more 160ms, then buffer size is 160ms

67 G.722 jitter buffer max 0-255ms 120 0-160 values are valid for IPLA. If you set more 160ms, then buffer size is 160ms

69 DTMF Level mode 0... VOIPU defalt value 1... Mainsoft value

(46)

28...-6dBm

1.4.4.9 IPLB K_CCIS Codec Information

IPLB K-CCIS Codec Information

Wizard – Advanced Items/VoIP/Networking/K-CCIS/K-CCIS Setup/K-CCIS codec Setup. (PRG84-21)

1…Enable

(47)

16 G.723 jitter buffer max 0-300 ms 120 0-270 values are valid at IPLA. If you set more 270ms, then buffer size is 270ms 17 TX Gain 0-40 (-20dbm ~ +20dbm) 0…-20 dbm 1…-19 dbm : 20…0 dbm : 39…19 dbm 40…20 dbm

setup is 84-31.

22 Jitter Buffer Mode 1...Static

2...Imme(No tone)

3...Imme

(48)

1…Enable setup is 84-31.

25 Echo Canceller Mode 0 … 2 wire and 4 wire

1 … 2 wire only

1…Enable

0 Not used IPLB-A

(49)

28...-6dBm

1.5 Extensions

IP Extensions

This section gives an overview about IP extensions that can be connected to the SV8100. There are several different types of IP extensions that can be used.

· SIP MLT (DT700) · Standard SIP (3rd Party) · MH240

· DtermIP · H.323 · IP DECT

SIP MLT Overview

SIP MLT extensions use an enhanced version of the SIP protocol (iSIP) developed by NEC to communicate with the SV8100 system.

This allows the phones to use most of the features available on a normal (TDM) keytelephone. Use the links below for further information.

SIP MLT General Information SIP MLT Features

SIP MLT Key Kit SIP MLT Adapters SIP MLT Models

SIP MLT Firmware Upgrade Prodedure SIP MLT IP Phone Manager

DtermIP Overview

DTermIP extensions are proprietary IP telephones that connect to the Aspire system using the NEC Protims protocol but can also connect to the SV8100 system.

These phones can use most of the features that can be found on a standard (TDM) keytelephone. Use the links below for further information.

(50)

Standard SIP Overview

SIP is an industry standard protocol and therefore there are many different hardware and software based phones.

As these phones are not developed by NEC and are not designed specifically for use on the SV8100, they do not support majority of the features that you would find on an SV8100 Keytelephone.

The features available to SIP extensions are detailed in the SIP Extension Compatibility Report for the relevant SIP terminal.

Use the links below for further information. Standard SIP General Information

Standard SIP availab le features

MH240 Overview

MH240 is a WiFi handset which uses the same protocol as the SIP MLT (iSIP) which makes it a very feature rich mobile device.

It can only be used in conjuction with the NEC WL 1700/1500 range of WiFi access points.

It is possible for the MH240 to roam between access points with ability to handover during a conversation giving a larger coverage area.

Use the links below for further information. MH240 General Information

MH240 Firmware Upgrade Procedure IP Phone Manager for MH240

IP DECT Overview

IP DECT is an NEC product that combines the functionality of traditional DECT with the flexibility of the Standard SIP protocol giving a robust and reliable wireless solution.

The handsets use the traditional DECT protocol to communicate with the DECT Access Points (DAP’s) and the DAP’s use the Standard SIP Protocol to communicate with the SV8100.

Use the links below for further information. IP DECT General Information

H.323 Extension Overview

H.323 is an industry standard protocol and therefore there are many different hardware and software based phones.

As these phones are not developed by NEC and are not designed specifically for use on the SV8100, they do not support majority of the features that you would find on an SV8100 Keytelephone.

The SV8100 is compliant with H.323 Version 3.

H.323 has, in the most part, been replaced by SIP. NEC strongly recommends the use of SIP in place of H.323 wherever possible.

Use the links below for further information. H.323 Extension General Information

1.5.1 SIP MLT

SIP Multi-Line Terminals

The SIP MLT (DT700) Series offers a line up of modular telephones. This modular design allows the telephones to be upgraded and customized (except economy version) as required.

Optional LCD panels, keypads, handset cradles, face plates and coloured side panels can easily be snapped on and off. See the tables for compatible kits.

Voice Over IP Manual

Table of Contents

Part I IP Manual

4

1

IP Manual

General Information

Introduction

Network Addressing Overview

General IP Configuration

1.1

General Information

General Information

Introduction

Network Addressing Overview

General IP Configuration

1.2

QoS Settings

SV8100 QoS

1.3

IP Address Collision

IP Address Collision

Description

SV8100 Programming

SV8100 Requirements

1.4

IPL Blades

IPL Differences

Description

IP Address Requirements

Which IPL is Installed

Jitter Buffer

Other information

LED Indications

IPLB Layout Information

IPLA Layout

Information

1.4.1

IPL Information

IPL Information

1.4.2

IPL Basic Setup

IPL Basic Setup

1.4.3

IPLA

IPLA DSP Information

1.4.4

IPLB

IPLB DSP Information

IPLB Echo Canceller Setup

IPLB SIP MLT Codec Information

IPLB DtermIP Codec Information

Item

No

Name

Data

Defaul

t

Comments

IPLB SIP Extension Codec Information

IPLB NetLink Codec Information

IPLB AspireNet Codec Information

IPLB SIP Trunk Codec Information

IPLB H.323 Trunk Codec Information

IPLB K-CCIS Codec Information

1.5

Extensions

IP Extensions

SIP MLT Overview

DtermIP Overview

Standard SIP Overview

MH240 Overview

IP DECT Overview

H.323 Extension Overview

1.5.1

SIP MLT

SIP Multi-Line Terminals