Configuring the Cisco ATA for H323 Using the ATA Web Interface

The use of H323 supports VoIP sessions between a VSAT/ATA and a PSTN and VoIP sessions between two VSATs/ATAs – Point-to-Point.

NOTE

For information on how to configure the Cisco ATA for SIP, refer to Section 5, page 60.

To configure the Cisco ATA for H323:

1. Access the ATA 186 (H323) Web Configuration interface as described in steps 1 through 3 of Section 5.1, page 60.

Result: The Cisco ATA 186 Configuration Screen is displayed.

Figure 43: ATA H323 Configuration

2. Configure the relevant parameters as shown in Table 5, below. The description in this table is based on the Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide (H323).

NOTE

This guide describes Cisco ATA parameters that are relevant for Gilat H323 configuration. For full description of the parameters and information about other ATA configuration parameters refer to the Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide (H323).

Table 5: ATA Configuration for H323

Parameter Name Description Values Default/

Recommended Value

Parameters for Configuration Method and Encryption These parameters are not relevant to Gilat Configuration UIPassword This parameter is not relevant to

Gilat configuration.

N/A N/A

UseTftp This parameter is not relevant to Gilat configuration.

N/A N/A

Tftp URL This parameter is not relevant to Gilat configuration.

N/A N/A

CfgInterval This parameter is not relevant to Gilat configuration.

N/A N/A

EncryptKey This parameter is not relevant to Gilat configuration.

N/A N/A

EncryptKeyEx This parameter is not relevant to Gilat configuration.

N/A N/A

Network Parameters Dhcp Enables/Disables the use of DHCP

server.

Values: 1 = Use DHCP to obtain IP, route, netmask, DNS, NTP,

StaticRoute Statically assigned default route.

Used if DHCP is set to 0.

IP address When used, this parameter should be set to the VSAT/PC IP address.

StaticIP Statically assigned IP address.

Used if DHCP is set to 0.

IP address

StaticNetMask Statically assigned subnetmask.

Used if DHCP is set to 0.

Subnetmask

Account Information Parameters

Parameter Name Description Values Default/

Recommended Value

UID0 Specify the telephone numbers for the Cisco ATA port: Phone 1.

If this parameter is set to 0, the port is disabled and no dial tone is sound.

UID0 is designated as Phone1 and is always defined.

Use UID0 for registration and authentication. If a Proxy server requires separate registration, use UID0 to specify the registration ID only. Use Login0 to specify the authentication ID.

Alphanumeric string of up to 31 characters.

PWD0 This parameter is not used in Gilat configuration.

N/A N/A

UID1 Indicates Cisco ATA port: Phone2.

UID1 is defined only when G711 codec is used.

In all other cases, this parameter should be set to 0.

Alphanumeric string of up to 31 characters.

PWD1 This parameter is not used in Gilat configuration.

N/A N/A

Gateway Specifies the H323 Gateway IP address. This is applicable to the networks that do not contain an H323 Gatekeeper.

In this case, all calls originating from the Cisco ATA will be directed to Gateway specified in this parameter.

IP address

UseLoginID Indicates which of the following will be used as a login ID:

If UseLoginID is set to 0, UID0 and UID1 are used for

authentication.

0

LoginID0 This parameter is not used in Gilat configuration.

N/A N/A

LoginID1 This parameter is not used in Gilat configuration.

N/A N/A

Gatekeeper Parameters

Parameter Name Description Values Default/

Recommended Value

GkOrProxy The IP address of the primary H323 Gatekeeper.

If set to 0, Gatekeeper-routed calls are disabled.

IP address

GkId Gatekeeper (H323) name. Alphanumeric string of up to 31 characters GkTimeToLive Indicates the “time to live” value

that is used when the Cisco ATA registers with the H.323

gatekeeper.

The registration is valid until the configured time expires.

Seconds

AltGk This parameter is not relevant to Gilat configuration.

N/A N/A

AltGkTimeOut This parameter is not relevant to Gilat configuration.

N/A N/A

Operating Parameters MediaPort Specifies the RTP base port that

the Cisco ATA uses to receive and transmit RTP media streams.

This port is defined in the VSAT IP Classifier on the SkyEdge NMS.

For more information, refer to Section 4.1.6, page 45.

Port number 16384

AudioMode Enables/disables silence suppression.

Indicates the low bit rate codec that can be used during codec negotiation.

Values:

0 – select G.723 as low-bit-rate codec.

3 – select G.729 as low bit rate codec.

6 – select G.726-32kbps as the low bit rate code.

Parameter Name Description Values Default/

Recommended Value

RxCodec Indicates the Receiving audio codec preference.

Values:

0 – select G.723 as low-bit-rate codec; can be selected only if LBRCodec is 0.

3 – select G.729a as low bit rate codec; can be selected only if LBRCodec is 3.

1 – G.711A-law 2 – G.711-law 6 - G.726 – 32 kbps TxCodec Indicates the Transmitting audio

codec preference.

Values:

0 – select G.723 as low-bit-rate codec; can be selected only if LBRCodec is 0.

1 – G.711A 2 – G.711u

3 – select G.729a as low bit rate codec can be selected only if LBRCodec is 3.

NumTxFrames Indicates the number of frames per packet.

The frame size for each G.729 data packet is 10 ms.

The frame size for each G.723 data packet is 30 ms.

The frame size for G.711 is fixed at 20 ms per packet and is not

ConnectMode Enables/disables fast start procedure. (Connection mode of the protocol used).

To enable the fast start procedure, set 0x00060401.

To disable the fast start procedure, set

3. Scroll to the bottom of the page and click apply.

Figure 44: Applying Configuration Changes

Result: The Cisco ATA 186 Configured Successfully message is displayed.

Figure 45: Cisco ATA Configured successfully

4. For the new parameters to take effect, click the Click here to reload option.

5. Wait for the page to refresh. The “Click here to reload” message should disappear.

6. Verify the relevant parameters are updated.

7. You can now try to make a test phone call to the hub.

6. SIP Proxy Configuration on the SkyEdge NMS