Table Of Contents
Cisco IP Phone 7905G/7912G (SIP) Release Notes for Firmware Release 1.3.0
These release notes are for use with the Cisco IP Phone models 7905G and 7912G running under the Session Initiation Protocol (SIP) and running software release 1.3.0.
These release notes include the following sections:
Installing Required Firmware for the Cisco IP Phone
Before using a Cisco IP Phone model 7905G or 7912G with SIP, you must install the appropriate firmware on the phone. Refer to the Readme.txt file that is included with the phone software package for more information.
For more information about Cisco IP Phones, refer to the following publications, which are available at this URL:
•Cisco IP Phone 7905G/7912G User Guide for Cisco CallManager
•Cisco IP Phone Models 7905G and 7912G Administrator Guide (SIP)
•Regulatory Compliance and Safety Information for the Cisco IP Phone 7900 Series
What's New in this Release
Software release 1.3.0 includes the following new and enhanced features:
•This release supports both versions of the Cisco IP Phone 7912G (CP-7912G and CP-7912G-A).
•RFC 3261 enhancements:
–Addition of branch parameter in Via header.
•RFC 3262 PRACK support—Phones support PRACK based on RFC 3262.
•RFC 3264 Offer/Answer support—Phones support the offer and answer model based on RFC 3264.
•RFC 3311 UPDATE method support—Phones support handling a SIP UPDATE request but do not initiate an UPDATE request.
•Call Forward on Busy support—Allows a phone user to specify a phone number to which all calls are immediately forwarded when the user's line is busy. To specify the telephone number, press the Menu button and choose Settings > Call Preferences > Call Forward On Busy Number.
Bit 27 of the CallPrefGuiShow, GUI Show Mask, CallPrefGuiSet, and GUI Set Mask parameters has been defined for the new Call Forward On Busy feature. The CallPrefGuiShow and the GUI Show Mask parameters control the feature options that are displayed on the Call Preferences menu on a phone. The CallPrefGuiSet and the GUI Set Mask parameters specify which parameters on the Call Preferences menu on the phone can be changed by an end user.
•Configurable request and response retransmissions support.
The MsgRetryLimits parameter lets you configure the number of times that a phone retransmits various SIP requests to the current proxy and the number of times that a phone sends responses to specific requests from the SIP user agent.
When the phone sends a SIP message to the remote SIP user agent, the message does not always reach its destination for various reasons. In this event, the phone retries sending the same message a specified number of times before timing out.
The number of retries is configurable for the following SIP requests:
The number of retries also is configurable for the phone's final response to an INVITE request from the SIP user agent.
Table 1 describes how to configure the MsgRetryLimits parameter. For this parameter:
•Support for disabling the Time and Date display
This release allows you to disable the time and/or date display on the phone. To disable the time and/or date display, configure the value of the appropriate parameter to zero (0).
What's New in Release 1.2.0
The previous software release, 1.2.0, for Cisco IP Phone models 7905G and 7912G running under SIP included the following new and enhanced features. For detailed information about these features, refer to Cisco IP Phone 7905G/7912G (SIP) Release Notes for Firmware Release 1.2.0, which is available at this URL:
•Additional time zones support—TimeZone parameter enhanced to provide support for time zones that are offset by increments of 30 minutes and 45 minutes
•D rule for displaying called ID—D rule added to the DialPlan parameter
•R rule for enhanced prefix—R rule added to the DialPlan parameter
•Advanced Syntax for Dial Plan Rules—Provides commands to specify the called number in the D dial plan rule and the trigger string in the R dial plan rule
•G.729 Annex B support—Phones indicate G.729 Annex B codec support by using a=fmtp and a=rtpmap attribute in the SDP body of outgoing INVITE requests and 183 and 200 responses to INVITE requests
•Selectable host target for forwarded calls—Allows setting bit 0 in the ConnectMode parameter to designate the destination of the new INVITE request that results from a forwarded call
•EncryptKeyEx parameter—Provides a stronger configuration file encryption key than the previous EncryptKey parameter
•New cfgfmt tool—Supports a stronger encryption method than the previous release of this tool
Table 2 describes Severity 1, 2, and 3 defects that were resolved in this release.
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