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
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