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Administrator’s Guide for SIP-T4X IP Phones
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3. Press or , or the Switch soft key to select the desired value from the Auto
Answer field.
4. Press the Save soft key to accept the change.
Call completion allows users to monitor the busy party and establish a call when the
busy party becomes available to receive a call. Two factors commonly prevent a call
from connecting successfully:

Callee does not answer

Callee actively rejects the incoming call before answering
IP phones support call completion using the SUBSCRIBE/NOTIFY method, which is
specified in draft-poetzl-sipping-call-completion-00, to subscribe to the busy party and
receive notifications of their status changes. Call completion is not applicable to
SIP-T42G and SIP-T41P IP phones.
Procedure
Call completion can be configured using the configuration files or locally.
Configuration File <y0000000000xx>.cfg
Configure call completion.
For more information, refer to Call
Completion on page 282 .
Local
Web User Interface
Configure call completion.
Navigate to:
http://<phoneIPAddress>/servlet
?p=features-general&q=load
Phone User Interface Configure call completion.
To configure call completion via web user interface:
1. Click on Features->General Information.