Aastra Telecom 41-001343-02 Advanced Operational Features, Feature Description, Sylantro Servers

Advanced Operational Features

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	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 reg-
	istration 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 sig-
	nificantly reduces the delay time when placing a call.
802.1x Support	Allows you to enable or disable the 802.1x Protocol support on the IP Phones.
Symmetric UDP Signaling	Allows you to enable or disable the phone to use port 5060 to send SIP UDP messages.
Symmetric TLS Signaling	Allows you to enable or disable the phone to use port 5061 to send SIP TLS messages.
Removing UserAgent and Server SIP Headers	Allows you to enable or disable the addition of the User-Agent and Server SIP headers in
	the SIP stack.
GRUU and sip.instance Support	The IP phones provide GRUU support using draft-ietf-sip-gruu-15. A sip.instance is added
	to all non-GRUU contacts.
Multi-Stage Digit Collection (Billing Codes) Support (for	IP Phones support Sylantro Server features, like mandatory and optional billing codes that
Sylantro Servers)	require the application server to notify the phone to collect more digits before completing
	the call. The IP phone is able to collect digits in two stages to support the billing code fea-
	ture.
Configurable DNS Queries	Allows you to specify the Domain Name Service (DNS) query method to use when the
	phone performs a DNS lookup.
Ignore Out of Sequence Errors	Allows you to configure the phone to ignore CSeq number errors on all SIP dialogs on the
	phone.

41-001343-02 REV04 – 05.2014 6-3