[asterisk-users] Calls being dropped - Cisco 7940 with SIP 8.12 image

[James Stocks]

On 3 Oct 2009, at 20:38, James Stocks wrote:

> On 3 Oct 2009, at 16:37, Jonathan Thurman wrote:
>
>> On Sat, Oct 3, 2009 at 6:17 AM, James Stocks <stocksy at stocksy.co.uk>
>> wrote:
>>> Hi everyone,
>>>
>>> I hope someone can help me with a problem I'm having with Cisco 7940
>>> phones on the SIP 8.12 image.  When I place a call from one of the
>>> handsets, the call proceeds as normal for 20 seconds and is then
>>> terminated by Asterisk (1.4.26.2):
>>>
>>
>> We are runing 08-12-00 on 7940/60s just fine (Asterisk 1.6.1.1), and
>> have been for a while.
>>
>>>
>>> As far as I can tell, the 'a=silenceSupp:off - - - -' header is not
>>> accepted by the 7940, which seems like a bug in the SIP image to me.
>>> However, I can't find a way to report this problem to Cisco  
>>> without a
>>> support contract (which I do not have).  Reverting to version 7.5
>>> fixes the problem, but it is still present in 8.11.  The problem is
>>> not present if the PSTN initiates the call, nor is it present if I
>>> allow the handsets to reinvite each other.  Here's the sip.conf
>>> snippet if it helps:
>>>
>>
>> That all looks fine to me.  What do your SIPDefault.cnf and
>> SIP<MAC>.cnf files look like?
>>
>> -Jonathan
>
> Hi Jonathan,
>
> Thanks for your reply.  Here's the two files, SIPDefault.cnf:
>
>
> # Image Version
> image_version: "P0S3-8-12-00"
>
> # Proxy Server
> proxy1_address: "pabx.spruce" # IP address here alternatively
>
> # Proxy Registration (0-disable (default), 1-enable)
> proxy_register: "1"
>
> # Setting for Message
> messages_uri: "222"
>
> # Time Server
> sntp_mode: "unicast"
> sntp_server: "snakebite.spruce" # IP address here alternatively
> time_zone: "GMT"
> dst_offset: "1"
> dst_start_month: "March"
> dst_start_day: ""
> dst_start_day_of_week: "Sun"
> dst_start_week_of_month: "4"
> dst_start_time: "02"
> dst_stop_month: "Oct"
> dst_stop_day: ""
> dst_stop_day_of_week: "Sunday"
> dst_stop_week_of_month: "4"
> dst_stop_time: "2"
> dst_auto_adjust: "1"
> date_format: "D/M/Y"
>
> # XML file that specifies the dialplan desired
> dial_template: "dialplan"
>
> #Time Format (0-12hr, 1-24hr [default])
> time_format_24hr: "1"
>
> # URL for external Phone Services
> services_url: "http://pabx.spruce/openxmldir/PhoneUI/index.php" # IP
> address here alternatively
>
> # URL for external Directory location
> directory_url: "http://pabx.spruce/openxmldir/PhoneUI/index.php" # IP
> address here alternatively
>
> # URL for branding logo
> logo_url: "http://pabx.spruce/cisco/asterisk.bmp" # IP address here
> alternatively
>
>
> and SIP<mac>.cnf:
>
>
> # Image Version
> image_version: "P0S3-8-12-00"
> phone_label: " "
>
> # Line 1 appearance
> line1_displayname: "James"
> line1_shortname:"200 James"
> line1_name: 200
> line1_authname: "200"
> line1_password: "*removed*"
>
> # Line 2 appearance
> line2_displayname: "Work"
> line2_shortname: "206 Work"
> line2_name: 206
> line2_authname: "206"
> line2_password: "*removed*"
>
> # Line 3 appearance
> line3_displayname: ""
> line3_shortname: ""
> line3_name: UNPROVISIONED
> line3_authname: "UNPROVISIONED"
> line3_password: "UNPROVISIONED"
>
> # Line 4 appearance
> line4_displayname: ""
> line4_shortname: ""
> line4_name: UNPROVISIONED
> line4_authname: "UNPROVISIONED"
> line4_password: "UNPROVISIONED"
>
> # Line 5 appearance
> line5_displayname: ""
> line5_shortname: ""
> line5_name: UNPROVISIONED
> line5_authname: "UNPROVISIONED"
> line5_password: "UNPROVISIONED"
>
> # Line 6 appearance
> line6_displayname: ""
> line6_shortname: ""
> line6_name: UNPROVISIONED
> line6_authname: "UNPROVISIONED"
> line6_password: "UNPROVISIONED"
>
> # Phone Prompt (The prompt that will be displayed on console and  
> telnet)
> phone_prompt: "SIP Phone" ; Limited to 15 characters (Default - SIP
> Phone)
>
> # Phone Password (Password to be used for console or telnet login)
> phone_password: "*removed*" ; Limited to 31 characters (Default -  
> cisco)
>
> # User classifcation used when Registering [ none(default), phone,  
> ip ]
> user_info: none

OK.  For anyone finding this thread, the problem exists in Asterisk  
1.4, but upgrading to Asterisk 1.6.1.6 appears to eliminate the problem.