Signaling Support - Cisco 7960G Administrator's Manual

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Signaling Support

Signaling Support
The following signaling and transport features are supported:
Dial-Plan and Messaging Support
The Cisco SIP IP phone supports a dial plan that enables automatic dialing and generation of a selectable
secondary dial tone. Direct entries must be saved using the Keep soft key in order to be stored in the
personal directory. The Cisco SIP IP phone also supports the following:
Cisco SIP IP Phone Administrator Guide, Release 6.x and 7.x
1-10
G.711 (mu-law and a-law) and G.729a audio compression
In-band dual tone multifrequency (DTMF) support for codecs for touch-tone dialing
Out-of-band DTMF signaling (RFC 2833)
Local directory configuration (save and recall) and automatic dial completion
Each time a call is successfully made or received, the number is stored in a local directory that is
maintained on the phone. The maximum number of entries is 32. Entries are aged out according to
usage and age. The oldest entry that has been called the least number of times is overwritten first.
This feature cannot be changed by the phone user; however, up to 20 entries can be "locked" (using
the Locked soft key) so that they will never be deleted.
Message waiting indication using unsolicited NOTIFY
When a caller leaves a voice message, a light indicates that a new voice message is in your mailbox.
If you listen to the message but do not save or delete the message, the light remains on. If you listen
to the new message and save or delete it, the light goes off. The message waiting indicator is
controlled by the voice-mail server. The indication is saved over a phone upgrade or reboot.
Dial-plan support for the asterisk (*) and pound (#) characters
In the current dial plan, the "*" and "#" characters are not matched if specified as dialed digits. The
"*" character is a wildcard that equates to "match one or more characters." Support was added for
the "*" character by adding "\" as an escape character and the "#" character as a digit in the dial
plan. Backward compatibility for the "#" and "*" characters is supported.
Distinctive alerting
If the INVITE message from the server contains an Alert-Info header, distinctive ringing is invoked.
The format of the header is "Alert-info: x." The value of "x" can be any number. This header is
received only by the phone and is not generated by the phone.
Distinctive ringing is supported when the phone is idle or during a call. In the idle mode, the phone
rings with a different cadence. The selected ringing type plays twice with a short pause in between.
In call-waiting mode, two short beeps are generated instead of one long beep.
Configurable and user-selectable dial tone
In earlier releases, specifying a comma (,) in the dial plan caused the phone to play the default
secondary dial tone. With this release, specific user-specified tones can play. You can specify up to
three different secondary dial tones in a single dial-plan match template. Tones play in the order in
which they are listed.
Ring-back tone for calls on hold
The parameter is selectable from the Settings > Call Preferences menu. When the parameter is
enabled, the phone rings if the handset is placed on-hook and there is also a call on hold.
Dial-plan update support using the Event header in NOTIFY messages.
Chapter 1
Product Overview

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