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3Com VCX V7122/SIP VoIP Gateway User Manual
Table 29
VCX V7122/SIP Specifications
Function Specification
Fax/Modem Transport Modes
Real time Fax Relay Group 3 fax relay up to 14400 with auto fallback
T.38-compliant
Tolerant network delay (up to 9 seconds round trip delay)
Modem
transparency
Auto switch to PCM or ADPCM on V.34 or V.90 modem detection
Protocols
Control Protocols
SIP - RFC 3261
Communication
Protocols
RTP/RTCP packetization
IP stack (UDP, TCP, RTP)
Remote Software download (TFTP and BootP support)
Telephony
Protocols
PRI (EuroISDN, NI2, 5ESS, DMS 100, QSIG)
E1/T1 CAS protocols: MFC-R2, E&M wink start, Immediate start, delay start, loop
start, and ground start
Feature Group B, D for E1/T1
In Band Signaling
DTMF (TIA 464A)
MF-R1, MFC-R2
User-defined Call Progress Tones
Interfaces
Telephony Interface
1, 2, 4, 8, or 16 E1/T1/J1 Balanced 120/100 ohm
Network Interface
Two 10/100 Base-T, half, or full duplex with auto-negotiation
LED Indicators
LED Indications on
Front Panel
Power, ACT/Fail, T1/E1 status, LAN status, Swap ready indication
Connectors and Switches
Rear Panel
Trunks 1 – 8 and 9
– 16
Two 50-pin female Telco connectors (DDK 57AE-40500-21D) or 8 RJ-48c
connectors for trunks 1 – 8 only
Ethernet 1 and 2
Two 10/100 Base-T, RJ-45 shielded connectors
AC Power
Standard IEC320 Appliance inlet Dual version fully redundant
Содержание VCX V7122 SIP
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