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1.2 Specifications
1.2 Specifications
For details about the SIP-GW4 card, refer to the following specifications.
Items
LAN Interface
WAN Interface
Voice Channel
SIP Accounts
SIP RFCs
CODECs
Voice Options
DTMF Relay
Protocol/Function
Maintenance
10
Installation Manual
RJ-45
10BASE-T/100BASE-TX
RJ-45
10BASE-T/100BASE-TX
4ch (Max 8ch with SIP-DSP4 card)
Max 8
RFC3261 (UDP only)
RFC3262 (PRACK)
RFC3264 (Offer/Answer)
RFC3311 (UPDATE)
RFC3581 (Symmetric Response Routing/rport)
RFC4028 (Session Timer)
G.711 (a-law and µ-law)
G.729AB
Echo Cancellation (64 ms)
Jitter Buffer (100 ms)
VAD (Voice Activity Detection)
PLC (Packet Loss Concealment)
Inband/Outband (RFC2833)/Outband (INFO)
RTP
RTCP
PPPoE (WAN Port)
DHCP Client (WAN Port)
DHCP Server (LAN Port)
DNS (A/SRV)
NAPT
NAT Traversal (STUN)
Port Forwarding
QoS (ToS field setting in IP header of SIP/RTP/RTCP)
WEB-based Programming (LAN Port)
Specification
Document Version 2008-10
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