3Com V6100, Руководство пользователя, Страница: 384 / 496

384
V6100 and V7122 User Guide
Function Specification
Echo Cancellation G.165 and G.168 2000, configurable tail length per gateway from 32 to 128
msec
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 Basic Call, 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