Cisco Catalyst 3000, Administration Manual

Page: 313 / 496

Description Setting
Checking this check box and configuring this SIP Profile on the SIP
trunk allows the Cisco Business Edition 3000 administrator to
• Apply digit analysis to the redirected contacts to make sure
that the call get routed correctly.
• Prevent DOS attack by limiting the number of redirection
(recursive redirection) that a service parameter can set.
• Allow other features to be invoked while the redirection is
taking place.
Getting redirected to a restricted phone number (such as an
international number) means that handling redirection at the stack
level will cause the call to be routed instead of being blocked. This
represents the behavior that you will get if the Redirect by
Application check box is unchecked.
Redirect by application
SIP OPTIONS Ping Information
Check this check box if you want to enable the SIP OPTIONS feature.
SIP OPTIONS are requests to the configured destination address on
the SIP trunk. If the remote SIP device fails to respond or sends back
a SIP error response such as 503 Service Unavailable or 408 Timeout,
Cisco Business Edition 3000 tries to reroute the calls by using other
Trunks or by using a different address.
If this check box is not checked, the SIP trunk does not track the
status of SIP trunk destinations.
When this check box is checked, you can configure two request
timers.
Enable OPTIONS ping
This field configures the time duration between SIP OPTIONS
requests when the remote peer is responding and the trunk is marked
as In Service. If at least one IP address is available, the trunk is In
Service; if all IP addresses are unavailable, the trunk is Out of
Service.
The default value specifies 60 seconds. Valid values range from 5
to 600 seconds.
In-Service Trunk Ping Interval (sec)
This field configures the time duration between SIP OPTIONS
requests when the remote peer is not responding and the trunk is
marked as Out of Service. The remote peer may be marked as Out
of Service if it fails to respond to OPTIONS, if it sends 503 or 408
responses, or if the Transport Control Protocol (TCP) connection
cannot be established. If at least one IP address is available, the trunk
is In Service; if all IP addresses are unavailable, the trunk is Out of
Service.
The default value specifies 120 seconds. Valid values range from 5
to 600 seconds.
Out-of-service Trunk Ping Interval
(sec)
Administration Guide for Cisco Business Edition 3000, Release 8.6(4)
OL-27022-01 293
Connection Settings