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UCM6510 IP PBX User Manual
Version 1.0.20.31
SIP Settings/Misc
Table 118: SIP Settings/Misc
Outbound SIP Registrations
Configure the register retry timeout (in seconds). The default setting is 20.
Configure the number of registration attempts before the UCM6510 gives
up. The default setting is 0, which means the UCM6510 will keep trying until
the server side accepts the registration request.
Configure the maximum bit rate (in kb/s) for video calls.
The default setting is 384.
Select to enable video support in SIP calls.
The default setting is "Yes".
Reject Non-Matching INVITE
If enabled, when rejecting an incoming INVITE or REGISTER request, the
UCM6510 will always reject with "401 Unauthorized" instead of notifying the
requester whether there is a matching user or peer for the request. This
reduces the ability of an attacker to scan for valid SIP usernames.
The default setting is "No".
SDP Attribute Passthrough
Enable Attribute
Passthrough
If enabled, and UCM receives a call that contains unknown
FEC/FECC/FBCP attributes, they will be passed through the UCM
unmodified.
If enabled, call negotiation will use final response SDP.
Allow callback when blind
transfer fails
If enabled, the UCM will call back to the transferrer when blind transfer fails
(due to the destination being busy or not answering. Note: This feature
applies only to internal calls.).
Note: This feature takes effect only on internal calls.
Configure the amount of time in seconds that the transferred party will wait
for the destination to answer before being redirected back to the transferrer.
Default is 60 seconds.
This option affects the DNS query only during Calls. When you choose
A&AAAA, UCM will do both A and AAAA type DNS query; when you chose
A, UCM will only do A type DNS query; and when you chose AAAA, UCM
will only do AAAA type DNS query.
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