![background image](http://html1.mh-extra.com/html/3com/vcx-v7122/vcx-v7122_user-manual_440856400.webp)
400
V7122 GatewayUser Guide
Function Specification
DTMF Detection and
Generation
Dynamic range 0 to -25 dBm, compliant with TIA 464B and Bellcore TR-
NWT-000506.
DTMF Transport (in-band)
Mute, transfer in RTP payload or relay in compliance with RFC 2833
Call Progress Tone
Detection and Generation
32 tones: single tone, dual tones or AM tones, programmable frequency &
amplitude; 64 frequencies in the range 300 to 1980 Hz, 1 to 4 cadences per
tone, up to 4 sets of ON/OFF periods.
Output Gain Control
-32 dB to +31 dB in steps of 1 dB
Input Gain Control
-32 dB to +31 dB in steps of 1 dB
Fax and Modem Transport Modes
Real time Fax Relay
Group 3 real-time fax relay up to 14400 bps with auto fallback
Tolerant network delay (up to 9 seconds round trip delay)
T.30 (PSTN) and T.38 (IP) compliant (real-time fax)
CNG tone detection & Relay per T.38
Answer tone (CED or AnsAm) detection & Relay per T.38
Fax Transparency
Automatic fax bypass (pass-through) to G.711, ADPCM or NSE bypass
mode
Modem Transparency
Automatic switching (pass-through) to PCM, ADPCM or NSE bypass mode
for modem signals (V.34 or V.90 modem detection)
Protocols
VoIP Signaling Protocol
SIP RFC 3261
Communication Protocols
RTP/RTCP packetization.
IP stack (UDP, TCP, RTP).
Remote Software load (TFTP, HTTP and HTTPS).
Telephony Protocols
PRI (ETSI Euro ISDN, ANSI NI2, 4/5ESS, DMS 100, QSIG, Japan INS1500,
Australian Telecom, New Zealand Telecom, Hong Kong Variant, Korean
MIC)
E1/T1 CAS protocols: MFC R2, E&M wink start,
Immediate start, delay start, loop start, ground start,
Feature Group B, D for E1/T1
In-Band Signaling
DTMF (TIA 464A)
MF-R1, MFC R2
User-defined Call Progress Tones
Diagnostics
Front panel Status LEDs
E1/T1 status
LAN status
Gateway status (Fail, ACT, Power, and Swap Ready).
Syslog events
Supported by Syslog Server, per RFC 3164 IETF standard.
SNMP MIBs and Traps
SNMP v2c, SNMP v3
Management
Summary of Contents for VCX V7122
Page 28: ...28 V7122 GatewayUser Guide ...
Page 39: ...V7122 Gateway User Guide 39 Reader s Notes ...
Page 40: ...40 V7122 GatewayUser Guide ...
Page 58: ...58 V7122 GatewayUser Guide Reader s Notes ...
Page 66: ...66 V7122 GatewayUser Guide Reader s Notes ...
Page 144: ...144 V7122 GatewayUser Guide Reader s Notes ...
Page 239: ...V7122 Gateway User Guide 239 Reader s Notes ...
Page 240: ...240 V7122 GatewayUser Guide ...
Page 246: ...246 V7122 GatewayUser Guide Reader s Notes ...
Page 270: ...270 V7122 GatewayUser Guide Reader s Notes ...
Page 287: ...V7122 Gateway User Guide 287 Reader s Notes ...
Page 288: ...288 V7122 GatewayUser Guide ...
Page 294: ...294 V7122 GatewayUser Guide Reader s Notes ...
Page 300: ...300 V7122 GatewayUser Guide Figure 88 Gateway s Startup Process ...
Page 315: ...V7122 Gateway User Guide 315 Reader s Notes ...
Page 316: ...316 V7122 GatewayUser Guide ...
Page 332: ...332 V7122 GatewayUser Guide Reader s Notes ...
Page 358: ...358 V7122 GatewayUser Guide Reader s Notes ...
Page 362: ...362 V7122 GatewayUser Guide Reader s Notes ...
Page 389: ...V7122 Gateway User Guide 389 Reader s Notes ...
Page 390: ...390 V7122 GatewayUser Guide ...
Page 398: ...398 V7122 GatewayUser Guide Reader s Notes ...
Page 406: ...406 V7122 GatewayUser Guide Reader s Notes ...
Page 408: ...408 V7122 GatewayUser Guide Reader s Notes ...
Page 409: ...V7122 Gateway User Guide 409 ...
Page 419: ...V7122 Gateway User Guide 419 Reader s Notes ...
Page 437: ...V7122 Gateway User Guide 437 Reader s Notes ...
Page 452: ...452 V7122 GatewayUser Guide Figure 137 UDP2File Utility ...
Page 453: ...V7122 Gateway User Guide 453 Reader s Notes ...
Page 459: ...V7122 Gateway User Guide 459 Reader s Notes ...
Page 475: ...V7122 Gateway User Guide 475 ...