[Asterisk-Users] FYI: New SIP Flash Image 7940/7960 IP Phone

[Andreas Anderson]

IP Phone Release 6.1 Bulletin

Cisco IP Phone firmware images now contain a
Cisco digital signature to provide authentication for
improved security. Once firmware version 6.1 is
loaded onto a phone, all subsequent firmware
versions will be checked for authenticity.

Firmware images prior to release 5.0 do not contain
a Cisco digital signature and therefore once version
6.1 is loaded onto a phone, all prior firmware
releases will be rejected. Only versions 5.0 or
greater will be accpected as it contains a Cisco
digital signature.

Bugs Fixed in SIP 6.1:

* SIP phone sends incorrect Call-ID during every SIP Register
* Bootup has config errors
* Excessive DNS SRV lookup when proxy configured as A record
* attended transfer disconnect the original caller, hangs itself
* REFER malformed when dialplan matches have user=phone
* wrong number of register retries on SIP phone
* Timer registration prior to expiration
* phone crash if receives SIP message w/contact > 128 bytes
* 79x0 does not follow RFC3261 for Via branch field
* More than 10 entires in Perosnal Directory not displayed
* Issues with ALPHANUMBER softkey when adding speed dial lines
* Phone continually resets after config file download
* Audible pop heard when using Answer softkey or line button
* Phone crashes after bugtrap 0x18
* TFTP GET fails with Solaris 9 tftp server
* Phone crash due to CDP delay only when DNS is configured
* DHCP T2 timer is less than T1
* Phone resets rtp session when it receives a re-invite
* Reg and Invite timers should start 0.5 seconds

The SIP phone has 2 new config parameters:

local_cfwd_enable - this parameter allows the admin to configure whether
or not the phone can do local call forwarding. This is a boolean field 
(either
on or off). the default is 1 which is enabled.

local_cfwd_enable : (0 - off, 1 - on (default) )

timer register_delta - this parameter allows the admin to configure the
time interval at which re-registration will occur. This is a numeric field 
in
seconds. The valid ranges are 32767 seconds to 0 seconds. The default
value is 5 seconds. This means the phone will attempt to re-register 5 
seconds
before its registeration period expires.

timer_register_delta : 5      ;  time interval in seconds

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