User's Manual

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 39 OF 56
Proxy-Require
A SIP Extension to notify the SIP server that the phone is behind a NAT/Firewall.
SIP Settings - Basic Settings
SIP transport
User can select UDP or TCP or TLS. Please make sure you’re SIP Server or network
environment supports SIP over the selected transport method. Default is UDP.
SIP Registration
This parameter controls whether the GXW4248 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 is cleared on reboot.
Outgoing Calls
Without
Registration
Default is No. If set to “Yes,” user can place outgoing calls even when not registered (if
allowed by Internet Telephone Service Provider) but is unable to receive incoming calls.
Any port, member of a Hunting Group that is not registered with a SIP account, will be able to
place outbound calls using the SIP credentials of the primary Hunting Group port.
For example: Port 1, 3 and 5 are members of the same Hunting Group
. Port 1 is registered
with a SIP account. Ports 3 and 5 are not registered. Ports 3 and 5 will be able to place
outbound calls using the SIP account of port 1, even if Outgoing Call without Registration
is
set to No
Register
Expiration
Allows the user to specify the time frequency (in minutes) for the GXW4248 to refresh its
registration with the specified registrar. The default interval is 60 minutes (or 1 hour). The
maximum interval is 65535 minutes (about 45 days).
SIP Registration
Failure Retry Wait
Time
Allows the user to specify the time frequency (in seconds) for the GXW4248 to re-register after
registration failure. The default interval is 20 seconds. The maximum interval is 3600
seconds
(1 hour).
Reregister Before
Expiration
Determines how many seconds before the previous registration expires that the port should
reregister.
Local SIP Port
Defines the local SIP port the GXW4248 will listen and transmit. The default value for Profile 1
is 5060 and 6060 for Profile 2.
Use Random SIP
Port
Default is No. If set to Yes, the device will pick randomly-generated SIP ports. This is usually
necessary when multiple GXW4248/HT50X are behind the same NAT.
SIP T1 Timeout
T1 is an estimate of the round-trip time between the client and server transactions.
If the network latency is high, select larger value for more reliable usage.
SIP T2 Timeout
Maximum retransmission interval for non-INVITE requests and INVITE responses.