User manual

40
Authenticate
Password
SIP service subscriber’s account password for GXP-2000 to register to
(SIP) servers of ITSP.
Name
SIP service subscriber’s name which will be used for Caller ID display.
Use DNS SRV:
Default is No. If set to Yes the client will use DNS SRV to look up
server.
User ID is Phone
Number
If the GXP-2000 has an assigned PSTN telephone number, this field
should be set to “Yes”. Otherwise, set it to “No”. If “Yes” is set, a
“user=phone” parameter will be attached to the “From” header in SIP
request
SIP Registration
This parameter controls whether the GXP-2000 needs to send
REGISTER messages to the proxy server. The default setting is “Yes”.
Unregister on
Reboot
Default is No. If set to yes, the SIP user’s registration information will
be cleared on reboot.
Register Expiration
This parameter allows user to specify the time frequency (in minutes)
that GXP-2000 refreshes its registration with the specified registrar. The
default interval is 60 minutes (or 1 hour). The maximum interval is
65535 minutes (about 45 days).
Local SIP port
This parameter defines the local SIP port the GXP-2000 will listen and
transmit. The default value for Account 1 is 5060. It is 5062, 5064,
5066 for Account 2, Account 3 and Account 4 respectively.
SIP T1 Timeout
T1 is an estimate of the round-trip time (RTT) between the client and
server transactions. If the network latency is high, select bigger value
for reliable usage.
SIP T2 Interval
This element sets the value of the SIP protocol T2 timer, in seconds.
Timer T2 defines the retransmit interval for INVITE responses and non-
INVITE requests. The SIP protocol default value is 4 seconds.