Configuring Call Handling
How to Configure Cisco Unified SCCP SRST
129
Cisco Unified SCCP and SIP SRST System Administrator Guide
OL-13143-04
Examples
The following example forwards calls to extension number 5005 when an incoming call reaches a busy
or unattended IP phone extension number. Incoming calls will ring for 15 seconds before being
forwarded to extension 5005.
call-manager-fallback
call-forward busy 5005
call-forward noan 5005 timeout seconds 15
The following example transforms an extension number for call forwarding when the extension number
is busy or unattended. The
call-forward busy
command has an argument of 50.., which prepends the
digits 50 to the last two digits of the called extension. The resulting extension is the number to which
incoming calls are forwarded when the original extension number is busy or unattended. For instance,
an incoming call to the busy extension 6002 will be forwarded to extension 5002, and an incoming call
to the busy extension 3442 will be forwarded to extension 5042. Incoming calls will ring for 15 seconds
before being forwarded.
call-manager-fallback
call-forward busy 50..
call-forward noan 50.. timeout seconds 15
Configuring Call Rerouting
Note
We recommend the
alias
command, which obsoletes the
default-destination
command, instead of the
default-destination
command.
The
alias
command provides a mechanism for rerouting calls to telephone numbers that are unavailable
during fallback. Up to 50 sets of rerouting alias rules can be created for calls to telephone numbers that
are unavailable during Cisco Unified Communications Manager fallback. Sets of alias rules are created
using the
alias
command. An alias is activated when a telephone registers that has a phone number
matching a configured
alternate-number
alias. Under that condition, an incoming call is rerouted to the
alternate number. The
alternate-number
argument can be used in multiple
alias
commands, allowing you
to reroute multiple different numbers to the same target number.
Step 3
call-forward
noan
directory-number
timeout
seconds
Example:
Router(config-cm-fallback)# call-forward noan
5005 timeout 10
Configures call forwarding to another number when no
answer is received from the Cisco IP phone.
•
directory-number
: Selected directory number
representing a fully qualified E.164 number or a local
extension number. This number can contain “.”
wildcard characters that correspond to the
right-justified digits in the directory number extension.
•
timeout
seconds
: Sets the waiting time, in seconds,
before the call is forwarded to another phone. The
seconds
range is from 3 to 60000.
Step 4
exit
Example:
Router(config-cm-fallback)# exit
Exits call-manager-fallback configuration mode.
Command or Action
Purpose
