AASTRA 6700i series, 9143, 9480i, 9480i CT SIP Administrator Guide EN - Manual (Page 630)

41-001343-01 Rev 03, Release 3.2.2 6-3
Advanced Operational Features
Description
This section provides the following information about advanced features of the IP phones:
Feature Description
TR-069 Support The IP Phones support the Technical Report (TR) 069 Protocol, a
Protocol that provides the communication between Customer-Premises
Equipment (CPE) (like the IP Phones) and Auto Configuration Servers
(ACS) over DSL/broadband connections.
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 (6757i CT and 9480i
CT only) Allows you to enable or disable a single call restriction between the
6757i 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.
As-Feature-Event Subscription Allows you to enable or disable a specific line on the phone with the
BroadSoft’s server-side DND, CFWD, or ACD features.
Blacklist Duration 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.
Transport Layer Security (TLS) Allows you to enable or disable the use of Persistent Transport Layer
Security (TLS).
Persistent TLS sets up the connection to the server once and re-uses
that connection for all calls from the phone. The setup connection for
Persistent TLS is established during the registration of the phone. If the
phones are set to use Persistent TLS, and a call is made from the
phone, this call and all subsequent calls use the same authenticated
connection. This significantly reduces the delay time when placing a
call.