Aastra Telecom SIP 57I - Manual (Page 441)

Advanced Operational Features
41-001160-00, Release 2.1, Rev 04 6-3
Configuring Advanced Operational Features
Advanced Operational Features Advanced Operational Features
Description
This section provides the following information about advanced features of the IP
phones:
Feature Description
MAC Address/Line Number in REGISTER
Messages Allows you to enable or disable the sending of the MAC
address and line number from the IP phone to the call
server, in a REGISTER message.
SIP Message Sequence for Blind Transfer Allows you to enable or disable the phone to use the Blind
Transfer method available in software prior to release 1.4.
Update Caller ID During a Call Allows you to enable or disable the updating of the Caller ID
information during a call.
Boot Sequence Recovery Mode Allows you to enable or disable Web recovery mode and set
the maximum boot count on the IP phone.
Auto-discovery Using mDNS The IP phones automatically perform an auto-discovery of all
servers on a network using mDNS. When the IP phone
discovers a TFTP server, it is automatically configured by
that TFTP server.
Single Call Restriction (57i CT only) Allows you to enable or disable a single call restriction
between the 57i CT base unit and a call server.
Missed Call Summary Subscription Allows missed calls that have been redirected by the server,
to be incremented in the missed calls indicator on the phone
it was initially directed to.
Blacklist Duration (Broadsoft Servers) Allows you to specifies the length of time, in seconds, that a
failed server remains on the server blacklist. The IP phone
avoids sending a SIP message to a failed server (if another
server is available) for this amount of time.
Whitelist Proxy Allows you to configure the phone to either accept or reject
call requests from a trusted proxy server.