AASTRA 53i ip phone Manual

Model 53i IP Phone User Guide  61

Call Forwarding

The call forwarding feature on the IP phone allows incoming calls to be 
forwarded to another destination. The phone sends the SIP message to the 
SIP proxy, which then forwards the call to the assigned destination.
Call forwarding is disabled by default. You can enable call forwarding on a 
global basis or on an individual line-basis, for each line.  If you have 
configured call forwarding on an individual line, then the settings for this 
line are used; otherwise, the phone-wide call forward settings are used.
You can enable call forwarding on all phones (global settings) or on specific 
lines (local settings) of a single phone. For local settings, you can set call 
forwarding on up to 9 individual lines.
For global and local call forwarding, you can set the following:
• Call forward mode
• Destination number
• Number of rings before forwarding the call (from 1 to 9 rings)
The following are the call forward modes you can set:

Note: You can set the global call forward settings using the IP phone UI or the Aastra 

Web UI. However, you must use the Aastra Web UI to set the per-line call for-
ward settings. The per-line settings override the settings for global call for-
warding.

Call 

ForwardMode

Description

Off

(Aastra Web UI only)

Disables call forward 

All

Phone forwards all incoming 

calls immediately to the 

specified destination.

Busy

Phone forwards incoming calls 

if the line is already in use.

No Answer

Phone forwards the call if it is 

not answered in the specified 

number of rings

Busy No Answer

Phone forwards the call if 

either the line is already in use 

or the call is not answered in 

the specified number of rings.