DGW-L1 User Manual
OpenVox Communication Co.Ltd www.openvox.cn
32
Advanced: Signaling Settings
Table 4-1-4Definition of Signaling Options
Options
Definition
Progress Inband If we should generate in-band ringing. Always use ‘never’ to never use in-band
signalling,
Even in cases where some buggy devices might not render it. Valid values: yes,
no, never. Default: never.
Append
user=phone to
URI
Whether or not to add;’ user=phone’ to URIs that contain a valid phone
number.
Add Q.850
Reason Headers
Whether or not to add Reason header and to use it if it is available.
Honor SDP
Version
By default, the gateway will honor the session version number in SDP packets
and will only modify the SDP session if the version number changes. Turn This
option off to force the SDP session version number and treat all SDP data as
new data. This is require for devices that send non-standard SDP packets
(observed with Microsoft OC S).By default
This option is on.
Allow Transfers
Whether or not to globally enable transfers. Choosing ‘no’ will disable all
transfers (unless enable in peers or users). Default is enabled.
Allow
Promiscuous
Redirects
Whether or not to allow 302 or REDIR to non-local SIP address .Note that
promiscredir when redirects are made to the local system will cause loops
since this gateway is incapable of performing a ‘hairpin’ call.
Max Forwards
Setting for the SIP Max-Forwards header (loop prevention).
Send TRYING on
REGISTER
Send 100 Trying when the endpoint registers.
Advanced Timer Settings
Table 4-1-5 Definition of Timer Options
Options
Definition
Default T1 Timer
This timer is used primarily in INVITE transactions. The default
for Timer T1 is 500ms or the measured run-trip time between
the gateway and the device if you have qualify=yes for the
device.
Call Setup Timer
If a provisional response is not received in this amount of time,
the call will auto-congest. Defaults to 64 times the default T1
timer.
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