PLANET VGW-400FO - Manual (Page 40)

4-Port SIP Internet Telephony Gateway
VGW-400 Series
Chapter 5 VoIP Setting
5.1 SIP
Item Explanation
Session Timer Enable session timer or not (RFC 4028)
Session Expiry
(sec)
This is the setting of initial session timer expires time according to
RFC4028 - Session Timers in the Session Initiation Protocol
Min SE
The minimum session timer allowed when receiving a call with
session timer value according to RFC 4028
Session Timer
Refresh Method
The session timer refresh method
PRACK
Enable provision ACK or not (RFC 3262)
- None: Disable PRACK
- Supported: When selecting this mode, 100rel will be added
to the support list. It indicates the VGW-400 series can
support the PRACK but not mandatory.
- Require: PRACK is mandatory required.
SIP Local Port The SIP local service port (default is 8080)
SIP Qos Type
Quality of Service Type for SIP signaling
- None: Not using QOS Tag and not enables QOS.
- DiffServ: Differentiated Services Value. Input DSCP value
0-63 for DSCP
- TOS: Type of Service which include IP precedence value
and TOS.
Accept Proxy Only
Only accept the call coming from the SIP proxy. Does not accept
peer to peer call in this mode
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