SIPPhoneReleaseNotes.3.1.pdf

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Release Notes for Cisco SIP and MGCP
IP Phone 7940/7960 Release 3.1
March 15, 2002
Contents
This document lists the known problems in the Cisco Session Initiation Protocol (SIP) and Media
Gateway Control Protocol (MGCP) IP Phone 7940/7960 Version 3.1 and contains information about the
Cisco SIP and MGCP IP Phone 7940/7960 (hereafter referred to as the Cisco SIP IP phone or Cisco
MGCP IP phone) that was not included in the most recent release of the phone documentation.
This document includes the following sections:
Contents, page 1
•
New and Changed Information, page 2
•
Installation Notes, page 2
•
Caveats, page 2
•
Documentation Updates, page 4
•
Related Documentation, page 5
•
Obtaining Documentation, page 6
•
Obtaining Technical Assistance, page 7
•
Corporate Headquarters:
Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA
Copyright © 2002. Cisco Systems, Inc. All rights reserved.
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New and Changed Information
New and Changed Information
New Software Features in Release 3.1
Authentication Name Length
The length of the authentication name field has been changed from 31 characters to 50 characters.
The display does not allow you to edit a 50-character string. The long authentication name must be
maintained on the TFTP server configuration file only. Attempting to edit the authentication name from
the display panel truncates the string at 31 characters. The phone must be rebooted to recover the original
value.
Note
Semi-Attended Transfer Capability
The ability to disable semi-attended transfer using the semi_attended_transfer configuration parameter
has been added.
Telnet Capability
The ability to disable Telnet using the telnet_level configuration parameter has been added to provide
greater security.
Installation Notes
For both Cisco SIP IP phones and Cisco MGCP IP phones, follow the instructions in the “Upgrading the
Cisco SIP IP Phone Firmware” section at the following URL:
h ttp://www.cisco.com/univercd/cc/td/doc/product/voice/c_ipphon/sip7960/sipadm30/maintain.htm
For these instructions, use P0S3-03-1-00 as the image name for version 3.1.
Caveats
Open Caveats - Release 3.1
CSCds35841: When in overview mode, the Cisco SIP IP phone soft keys do not work.
Applies to: SIP.
Problem Description: Pressing a line button during a call displays the overview screen on which
there is located a Redial and NewCall soft key. However, these soft keys are ignored by the phone
if pressed.
Recommended Action: Return to the call screen. Wait 8 seconds for the call screen to reappear or
press the line button again.
•
Release Notes for Cisco SIP and MGCP IP Phone 7940/7960 Release 3.1
2
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Caveats
•
CSCdu68091 : No support for configurable action tag in REGISTER Contact.
Applies to: SIP.
Problem Description : When the phone sends a REGISTER message it does not attach an
action= tag to the Contact header. This can lead to mismatched registrations when another client
registers with the same user ID because the 7960/7940 is always treated as action=none.
Recommended Action : Configure the other client to have action=none to avoid mismatched
registrations.
•
CSCdv90788 : MWI/Ringer lamp lights briefly when answering call waiting call.
Applies to: SIP and MGCP.
Problem Description : When more than one call is active or on hold and a new call comes in on a
different line, the message waiting indicator (MWI) lamp lights briefly after answering the call.
Recommended Action : None.
CSCdw40309 : Multiple hookflashes cause speaker pops.
Applies to: SIP and MGCP.
Problem Description : Multiple instances of onhook and offhook with the handset causes the
speaker to pop or sometimes be enabled.
Recommended Action : None.
•
•
CSCdu02920 —Address Resolution Protocol (ARP) cache does not update correctly.
Applies to: SIP and MGCP.
Problem Description : During a phone call, the control server is failed over to the backup. The new
Active control server sends a RQNT message to the Cisco IP phone, but the Cisco IP phone still has
the MAC address of the old control server so it replies to the old control server.
Recommended Action : None.
Resolved Caveats - Release 3.1
•
CSCdw59439 —Contact header should not be used prior to 200 Rec.
•
CSCdw80802 —When the phone sends an invite (or any message with Session Description Protocol
[SDP]) there should be one attribute line for the codec specified in the m: line.
•
CSCdw59431 —User authname and password are limited to 31 characters.
•
CSCdw72263 —Transfer while ringing (semi-attended) needs to be configurable.
•
CSCdw61930 —Multiple duplicate entries in personal directory.
•
CSCdw17617 —Backup proxy display message occurs while using primary proxy.
•
CSCdw72253 —Need to add 7940 audit string.
•
CSCdw68518 / CSCdw68516 —Anonymous Call Block fails due to case sensitive anonymous.
•
CSCdw71694 —Telnet cannot be disabled.
•
CSCdw75223 —Cisco MGCP IP phone reboots with extensive User Datagram Protocol (UDP)
traffic.
•
CSCdw74640 —Cannot hang up after call fails with Cisco MGX8850.
•
CSCdv89740 —Telnet session may close prematurely.
Release Notes for Cisco SIP and MGCP IP Phone 7940/7960 Release 3.1
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Documentation Updates
•
CSCdw86448 —Audio/Video Transport (AVT) packets being sent at 10 ms while duration reflects
20 ms.
•
CSCdw93758 —AVT marker bit set multiple times when using the G.729 codec.
•
CSCdx01732 —Conference call with voice activity detection (VAD) enabled causes digital signal
processor (DSP) problems.
•
CSCdx00609 —The **** in password hiding varies in length.
•
CSCdx00780 —Phone gets into a continuous reboot loop after reset.
•
CSCdw91038 —Reset should be under privileged Telnet access.
•
CSCdx04477 —The first G.729A & VAD call after a conference call results in no RTP.
Documentation Updates
New Configuration Parameters
These new configuration parameters apply to the following documents:
• “Modifying the Phone’s SIP Settings” section in the “Managing Cisco SIP IP Phones” chapter of
the Cisco SIP IP Phone 7940/7960 Administrator Guide, Version 3.0.
• “Using Configuration Files” section in the “Configuring the Cisco MGCP IP Phone” chapter of the
Cisco MGCP IP Phone Reference Guide .
The following rows are added to Table 3-2 in the Cisco SIP IP Phone 7940/7960 Administrator Guide,
Version 3.0 :
Configuration File
SIP Configuration Menu
Network Configuration
Menu
Services Menu
semi_attended_transfer
NA
NA
NA
telnet_level
NA
NA
NA
Release Notes for Cisco SIP and MGCP IP Phone 7940/7960 Release 3.1
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Related Documentation
The following rows are added to Table 3-3 in the Cisco SIP IP Phone 7940/7960 Administrator Guide,
Version 3.0 , and Table 4-2 in the Cisco MGCP IP Phone Reference Guide :
Required or
Optional
Parameter
Description
semi_attended_transfer
Optional
Specifies if a semi-attended transfer is allowed. In a
semi-attended transfer, Phone A calls Phone B. Phone B
answers, and decides to transfer the call to Phone C. If
Phone B completes the transfer while phone C is still
ringing, it is called a semi-attended transfer.
Some proxies do not handle this transaction properly; if
necessary, you can disable this parameter.
Set to 1 to enable (default) and 0 to disable.
telnet_level
Optional
Enables or disables telnet access to the IP phone.
Valid values are:
• 0—disabled (the default value)
• 1—enabled
• 2—privileged. The difference between enabled and
privileged is that the following CLI commands are
only available in the privileged mode:
– test
– reset
– show dump
– show strpool
– show personaldir
To see which mode the phone is using, enter the tty
command.
Note
The phone must be rebooted after changing this
parameter in order for it to take effect.
Related Documentation
Cisco SIP IP Phone Administrator Guide Version 3.0
•
Cisco MGCP IP Phone Reference Guide
•
Cisco IP Phone 7960 and 7940 Series at a Glance
•
•
Installing the Wall Mount Kit for the Cisco IP Phone
•
Release Notes for Cisco SIP and MGCP IP Phone 7940/7960 Release 3.1
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