SECTION – B : TERMS & CONDITIONS
Page 99 of 128 place between users connected to the same VCCS or to an
external user and shall be compliant to ED137B. Shall be able to connect to digital EPABX.
The following telephone communication functions shall be available in the VCCS. It shall be possible to assign any or all functions to any operator position. VCCS shall permit operation of any or all of these communication functions by all operator positions simultaneously.
10.2 Call Queue:
10.2.1 Each operator position shall provide call queue of at least five incoming calls. All calls in the queue shall remain in a calling condition until answered.
10.2.2 Additional indications and audible alerts should be used to identify priority calls that arrive in the call queue.
10.2.3 Identity of each call shall be displayed on the Touch entry Device. If defined in the system internal phonebook, the assigned name shall be displayed otherwise the caller number shall be displayed.
10.2.4 Operator shall be able to initiate an outgoing call even when call queue is full.
10.2.5 Access to a call in queue shall be by simply touching the corresponding field in the touch screen.
10.3 Connection States
The VCCS shall display atleast the following connection states for a call:
Incoming Outgoing Active Engaged On Hold Suspended Busy Un-serviceable 10.4 Direct Access (DA):
Call shall be established by a single key stroke to another operator position or group of operator positions within the same VCCS. It shall have minimum of 100 DA keys grouped
Page 100 of 128 in different pages which can be individually named.
Pressing a DA key/button shall open up a two way voice path to the associated operator position and call shall be immediately active.
10.5 Indirect Access Call :
It shall be possible to initiate an outgoing call by manual dialing of a complete number or abbreviated code or predefined group using Dial pad.
Last number redial shall also be provided. 10.6 Abbreviated Dialing/code Dialing:
Abbreviated Dialing function shall enable the operator to initiate an indirect access (IA) call without dialing the full access code. A destination shall be accessible by dialing a two digit code or by pressing a speed dial button
10.7 Priority Call
10.7.1 Priority call function shall be available at the operator positions as described in ED137B. This function shall increase the priority of an outgoing call to be established internally on the VCCS or externally on the Air Traffic Services Network (circuits that support priority calling such as ATS QSIG, MFC etc.)
10.7.2 Intrusion by Priority Call: In the event priority call encounter the called position busy, intrusion should take place automatically, before an intrusion occurs a warning tone should be given. It shall be possible for any user to be protected against intrusion by other users. This protection shall be selectable either individually on a user by user basis or as a single parameter for all user connected to VCCS.
10.8 Call Hold Function:
10.8.1 Operator shall be able to disconnect temporarily from an established call in order to carry out other telephony functions before returning to the original established call (put on hold an active call and continue the call at a later moment).
10.8.2 VCCS shall be possible to toggle between active and held call.
10.8.3 During call hold, the operator shall be able to initiate or answer air ground calls and other ground – ground calls. 10.8.4 It shall be possible to put at least more than one call on
Page 101 of 128 hold.
10.8.5 It shall be possible to put any call on hold.
10.8.6 VCCS shall maintain a call on hold until it is retrieved or released.
10.9 Conference Calls:
10.9.1 This function shall enable the operator to interconnect a number of operator positions and /or external call subscribers, allowing full telephone communication to all connected positions/subscribers.
10.9.2 A dedicated conference key shall be made available and it shall be possible to initiate a conference independently of whether the first call is incoming or outgoing. All participant of the conference shall be able to converse with each other.
10.9.3 There shall be no limitation in the number of simultaneous conferences in the system. All operator positions shall be able to establish conference at the same time.
10.9.4 Any participant of a conference shall be able to leave the conference at any time by terminating the call.
10.9.5 Participants shall be able to leave the conference temporarily.
10.9.6 The conference initiator shall terminate the conference permanently.
10.9.7 Predefined conference: This function shall enable an operator to interconnect a number of operators and/or external call subscribers by a single key stroke allowing full communication to all connected parties.
10.9.8 DA keys shall be configurable for predefined conference calls. A single touch of configured DA keys shall immediately start a parallel call to all configured positions/parties.
10.10 Call Transfer:
10.10.1 A transfer key shall be available and shall transfer an active call to another position/subscriber.
10.11 Call Forward/Divert
10.11.1 This functionality shall enable a user to cause all incoming DA and IDA calls to that user to be routed/forwarded/diverted to another user/operator
position in the following condition: - unconditionally;
Page 102 of 128 - if a busy condition is detected at the called position;
- If the called position fails to answer an incoming calls within a predetermined time (i.e. no reply).
10.12 Call Pick up
10.12.1 This function shall enable an operator to answer calls that are in the alerting phase (waiting to be answered) at another operator position.
Shall display the CWP name who is engaging PSTN line. 10.14 VCCS Shall also have the following features:
- Group Hunting; - Selective call pick up; - Broadcast mode;
- Silence option for incoming calls 11.0 Intercom Functions:
11.1 The following operational intercom functions shall be available in the system:
a. Inter position Hot Line intercom b. Inter position Dial intercom c. Inter position Ring down intercom 11.2 Each hot line buttons should be single touch and
distinguish colored 12.0 Recording device
12.1 The redundant recorder shall be used to record audio/video/control/data streams over dual redundant ATS IP based network, based on the configuration assigned by administrator.
12.2 Shall record all voice activities of radio, Telephone and CWP
12.3 Record-Replay application enabled on CWP by system administrator within the ATS network shall be able to access the recorded video streams, if authorized and approved by system administrators
12.4 The recorder device shall support simultaneous play back and recording at full duplex operation.
12.5 A network attached replay device should be provided for legal replays.
12.6 NAS recorder device shall provide a high quality recording storage and play back of recorded data.
Page 103 of 128 12.7 NAS recorder device shall support of local/centralized user
management with security procedures/level to control and authenticate its configuration & use.
12.8 The legal recorder shall extend to provide & notify multiple alarms using audio/visual indications and reporting module. 12.9 Raid support shall be given for hot swapping of HDD
12.10 HDD capacity may be 500 and above.
13.0 VCCS TECHNICAL REQUIREMENTS
13.1 Following are the detailed technical requirements for various Units/Subunits of the VCCS.
13.2 The design and selection of equipment shall be consistent with the requirements of long term trouble free operation with highest degree of reliability and maintainability. 13.3 All equipment shall be constructed to operate safely
without undue heating, vibration, wear, corrosion, electromagnetic interference or similar problems.
13.4 The system shall be designed for continuous operation (24 hours a day and 365 days a year). The design life of the equipment shall be minimum of 10 years. This life shall be achievable through normal and regular maintenance and without major dismantling or overhauling. All types of spares and spare modules shall be made available during life time of the equipment for maintenance, repair and up keepof the equipment.
13.5 Safety and protection of personnel during normal operation and maintenance or during malfunctioning of any equipment shall be provided as integrated feature of design, manufacture and installation. Adequate protection shall be included for ensuring safety of personnel from any possible hazards, including EMI radiation, high voltages etc. The bidder shall furnish the details of EMI and Safety Standards met by his equipments and safety features built in.
13.6 The equipment shall be constructed on a modular basis throughout, using plug-in type components to the maximum practical content. Parts subject to failure, wear, corrosion or other deteriorations or requiring occasional inspection, adjustment or replacement shall be made
Page 104 of 128 accessible and capable of convenient removal.
13.7 The equipment shall be capable of being firmly mounted in wall or floor.
13.8 Input/output termination cables shall be properly labeled to permit ready identification of the incoming/outgoing wiring. 13.9 All interconnecting cables required to connect the equipment shall be furnished. All cables shall be fully assembled, connector pre-terminated and factory tested as part of overall system checkout.
13.10 The equipment shall operate without any deviation in quality or degradation of system performance and all the parameters detailed in these specifications shall be guaranteed over the environmental conditions specified in the tender document.
13.11 All equipment supplied under this contract shall be in accordance with the latest applicable recommendations, regulations and standards of
CCITT, CCIR, IEC, IEEE, IS, CISPR standards. For
parameters not covered under the above codes, internationally acceptable standards shall be accepted. The bidder shall furnish complete List of all standards and codes under which his equipment is designed, manufactured and assembled along with his bid.
13.12 All the power supply and data cable connectors shall be provided with a protection mechanism against accidental disconnection from the units/modules.
14.0 Maintainability:
14.1 The system shall detect and report any fault that occur in its components sub systems ( i.e PCBs , Modules, LRU) and indicate the impact on the system of any reported fault. System shall permit to replace the faulty sub - system while the VCCS continue to function.
14.2 Easy access to the following VCCS components should be available :
- All PCBs;
- Equipment shelves; - Test points;
- Diagnostic display and indicators; - Line and power connections.
14.3 All Software and hardware faults should be reported to the system management. System should provide self diagnostic
Page 105 of 128 capabilities, with the ability to detect failure, isolate
defective modules, and take out of service any defective communication path or communication link.
Up-gradation of software shall be possible without affecting the performance and function of VCCS.
VCCS shall offer a mean of changing back to previous software version if problem occur.
14.4 For system operation and maintenance, and checking health of equipment, adequate alarms, controls, and monitoring facilities shall be provided. In case of fault and degraded performance it shall be possible to identify faulty unit up to card level based on alarm and monitoring facilities provided. The bidder shall describe the
local/remote monitoring facilities, status indicators, and visual and/or audible alarms of the various units/sub assemblies/modules. The failure of hardware or any malfunction of the system should accompany a
suppressible audio alarm along with visual indication. The software should keep a log of all the alarms in a readable format, describing the fault.
14.5 Availability & reliability:
14.5.1 The availability of complete VCCS shall be in excess of 99.999%.
A calculation sheet to arrive at the reliability figure shall be enclosed along with the bid.
15.0 Signal Characteristics
15.1 Where the system is required to receive and send supervisory and ringing signals on the interphone circuits, the signals shall conform to established telephone industry standards.
15.2 Signal inputs to the VCCS are comprised of voice signals, call signals and telephone supervisory signals. Specific interface requirements for voice signals on incoming lines are to be provided as per the relevant specifications of CCT1. Gain compensation and internal gain control shall be provided for + 10 db offsets from the typical incoming voice signal levels. 15.3 Associated with each position there shall be a
balanced 600 ohm output that shall carry all incoming and outgoing voce signals at that position for
recording purposes. The normal output signal level shall be 0dBm into a matched resistive load for
Page 106 of 128 incoming and outgoing signals taken separately.
16.0 System Processing Characteristics
16.1 Frequency Response: 300 Hz to 3400 Hz. above and below this range, the response shall roll off at a minimum rate of 6 dB per octave.
16.2 Level Regulation: Both manual and automatic gain control facilities shall be provided in the system.
16.3 Hum and Noise : On any communication circuit, with the gain controls adjusted for nominal output signal levels, the total hum and noise levels at the output of an idle circuit provided with a matched resistive termination shall be less than -60dBm measured with CCITT psophomoric weighting filter.
16.4 Cross talk: The crosstalk appearing as an unwanted output signal on any circuit shall be at least 65 dB below the level of a wanted signal, under conditions where circuits have matched resistive terminations and nominal signals levels applied.
16.5 Harmonic Distortion: With matched resistive inputs and outputs, the nominal signal levels over the frequency range 300Hz - 3400Hz applied as inputs,the total harmonic distortion appearing at the outputs shall be less than 1.5%. 16.6 Side tones: Side tones shall appear only at the headsets
and shall be heard on all circuits. Side tone levels shall be - 16dB with respect to the transmitted signal.
17.0 Access and Switching times :
17.1 The delays figures detailed below shall be achieved under all operating condition of the VCCS including the full traffic load.
- PTT Set up Delay: the delay between selecting PTT and the activation of the line interface shall be less than 10 ms.
- A/c Call delay: the delay between the squelch signal arriving at the VCCS from the receiver to the audio activation at the operator position loud
speaker/headset, shall not be greater than 10 ms. - Call processing delay:
- User request shall be accepted and indicated by VCCS in less than 40ms.
Page 107 of 128 i.e. the time between the instant that a user request is
accepted by the VCCS and the instant that the associated response occurs shall be less than 40ms. - Dial tone delay: 30ms or less.
Software response delays:
- Alarm indications: Alarm indication shall be displayed in less than 3 seconds period from the occurrence of the related fault.
- Configuration changes : the time taken to effect a change in the user configuration should be no more than 10 seconds.
- System response time: Time between the activation of a key and the corresponding reaction on the HMI shall not exceed 40ms.
- System startup time shall be less than 2 minutes. 18.0 Interfaces
18.1 Radio interfaces
4-wire analog interface (contact, phantom or in-band PTT/SQU- ELCH signaling), 4-wire E&M, RS-232 data interface for remote control & call associated services. ED137B complaint VoIP interfaces.
18.2 E&M Interfaces 2 wire E&M interface 18.3 Remote Interfaces:
4wire 64 Kbps analogue/digital data line, E1 line, Fractional E1 and IP. Mainly one single frequency (Main/StbyTx/Rx) remote site should be operated with one 64 Kbps line. VCCS to VCCS connectivity may be through MFC R2 / ATC Qsig accordingly the interface may be 64 Kbps/E1
18.4 Telephone interfaces
18.4.1
2/4 wire PABX/PSTN Circuit18.4.2
2/4 wire telephone circuits, loop signaling18.4.3
2/4 wire telephone circuits, tone signaling18.4.4
2 and 4 wire circuits, voice call or DC signaling18.4.5
Satellite Phone interface18.4.6
Cellular Phone interface using Fixed Cellular Terminals.18.4.7
VoIP signaling interface for connection to the VoIPphones(ED137B complaint ). 19.0 Networking of VCCS
19.1 The system shall be compliant to the provisions contained in the ICAO DOC 9804 AN/762 (Manual on Air Traffic
Page 108 of 128 Services (ATS) Ground-Ground voice switching and
signaling).
19.2 The link speed between two VCCS shall be 64Kbps/ 2 mbps as per remote site VCCS configuration
19.3 Signaling between two VCCS shall be ATS - QSIG and ISDN. and E-1.
Remote VCS units shall be interfaced with E1 / fractional E1 (G703, G704, G728 and G729), VoIP (ED137B) links toward the network. To reduce the bandwidth costs, voice compression/decompression can be added.