Specifications

Setting Up Call Handling
How to Set Up Call Handling for Incoming and Outgoing Calls
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Cisco Unified Survivable Remote Site Telephony Version 4.0 System Administrator Guide
DETAILED STEPS
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
Command or Action Purpose
Step 1
call-manager-fallback
Example:
Router(config)# call-manager-fallback
Enters call-manager-fallback configuration mode.
Step 2
call-forward busy directory-number
Example:
Router(config-cm-fallback)# call-forward busy
50..
Configures call forwarding to another number when the
Cisco IP phone is busy.
• directory-number—Selected directory number
representing a fully qualified E.164 number. This
number can contain “.” wildcard characters that
correspond to the right-justified digits in the directory
number extension.
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.