[cisco-voip] Fwd: Faxing over SIP Trunk

[Voice Noob]

Also you are not doing any type of FoIP, you are simply hanging a fax
machine off an analog port to connet to the PSTN correct?

On Fri, Jul 11, 2008 at 9:30 AM, Voice Noob <voicenoob at gmail.com> wrote:

> Why don't you send the call from the Nortel box as H.323 directly to the
> gateway and skip the SIP trunk?
>
>   On Thu, Jul 10, 2008 at 11:32 AM, Nick <csvoip at googlemail.com> wrote:
>
>>  We are using fax machines connected to the Nortel CS1000 pbx which
>> routes the faxes over the SIP trunk to CUCM 6.1, which then routes to a H323
>> gateway and out of an E1 to the PSTN. This is just for outbound faxes as all
>> inbound are local to the site.
>>
>>
>> 2008/7/10 James Buchanan <jbuchanan at ctiusa.com>:
>>
>>>  Depends. Are you using a FoIP solution, or are you using fax machines
>>> for inbound and outbound faxing?
>>>
>>>
>>>
>>> *From:* Nick [mailto:csvoip at googlemail.com]
>>> *Sent:* Thursday, July 10, 2008 11:24 AM
>>>
>>> *To:* James Buchanan
>>> *Cc:* Matt Slaga (US); cisco-voip at puck-nether.net
>>> *Subject:* Re: [cisco-voip] Fwd: Faxing over SIP Trunk
>>>
>>>
>>>
>>> Do I have to use T38 for this to work then, the gateway is already set up
>>> for modem passthrough as the calls come from the CUCM to the gateway and
>>> faxing from elsewhere is working fine, it's just the faxes that originate
>>> across the SIP trunk that do not work.
>>>
>>>
>>>
>>>
>>>
>>> 2008/7/10 James Buchanan <jbuchanan at ctiusa.com>:
>>>
>>> I believe this may give you some assistance:
>>>
>>>
>>>
>>>
>>> http://www.cisco.com/en/US/docs/ios/12_3/vvf_c/cisco_ios_fax_services_over_ip_application_guide/t38.html#wp1158066
>>>
>>>
>>>
>>> This will help you troubleshoot the T.38 side.
>>>
>>>
>>>
>>> *From:* Nick [mailto:csvoip at googlemail.com]
>>> *Sent:* Thursday, July 10, 2008 11:09 AM
>>>
>>>
>>> *To:* James Buchanan
>>> *Cc:* Matt Slaga (US); cisco-voip at puck-nether.net
>>> *Subject:* Re: [cisco-voip] Fwd: Faxing over SIP Trunk
>>>
>>>
>>>
>>> Yes, the call goes out of an H323 gateway to the PSTN.
>>>
>>> 2008/7/10 James Buchanan <jbuchanan at ctiusa.com>:
>>>
>>> Are you using an H323 gateway?
>>>
>>>
>>>
>>> *From:* Nick [mailto:csvoip at googlemail.com]
>>> *Sent:* Thursday, July 10, 2008 11:03 AM
>>> *To:* James Buchanan
>>> *Cc:* Matt Slaga (US); cisco-voip at puck-nether.net
>>> *Subject:* Re: [cisco-voip] Fwd: Faxing over SIP Trunk
>>>
>>>
>>>
>>> We are going straight into the CUCM and then routing the calls from there
>>> to a gateway and out the PSTN.
>>>
>>> 2008/7/10 James Buchanan <jbuchanan at ctiusa.com>:
>>>
>>> Are you going through a gateway or going straight into UCM?
>>>
>>>
>>>
>>> *From:* Matt Slaga (US) [mailto:Matt.Slaga at us.didata.com]
>>> *Sent:* Thursday, July 10, 2008 10:55 AM
>>> *To:* Nick; cisco-voip at puck-nether.net; James Buchanan
>>> *Subject:* RE: [cisco-voip] Fwd: Faxing over SIP Trunk
>>>
>>>
>>>
>>> Make sure you are using G711 over your SIP trunk.
>>>
>>>
>>>
>>> *From:* cisco-voip-bounces at puck.nether.net [mailto:
>>> cisco-voip-bounces at puck.nether.net] *On Behalf Of *Nick
>>> *Sent:* Thursday, July 10, 2008 11:52 AM
>>> *To:* cisco-voip at puck-nether.net; James Buchanan
>>> *Subject:* [cisco-voip] Fwd: Faxing over SIP Trunk
>>>
>>>
>>>
>>> We are trying to fax over IP across the SIP trunk and route out of a PSTN
>>> gateway. I missed typed my e-mail and it was supposed to say faxes are not
>>> working.
>>>
>>> 2008/7/10 James Buchanan <jbuchanan at ctiusa.com>:
>>>
>>>
>>>
>>> Is this FoIP?
>>>
>>>
>>>
>>> *From:* cisco-voip-bounces at puck.nether.net [mailto:
>>> cisco-voip-bounces at puck.nether.net] *On Behalf Of *Nick
>>> *Sent:* Thursday, July 10, 2008 10:40 AM
>>> *To:* cisco-voip at puck-nether.net
>>> *Subject:* [cisco-voip] Faxing over SIP Trunk
>>>
>>>
>>>
>>> We are having some issues with faxing over a SIP trunk, the setup is
>>> Nortel CS1000 > SIP Trunk > CUCM 6.1. All outbound calls from the CS1000 are
>>> routed to go out of a gateway connected to the CUCM, phone calls are fine
>>> but faxes are working, the calls are getting to the gateway and you hear the
>>> fax machine answer and get fax tone for about a second then it cuts off. The
>>> debug on the gateway shows normal call clearing and no errors.
>>>
>>>
>>>
>>> Does anyone have any experience of this sort of set up? or any useful
>>> troubleshooting tips.
>>>
>>>
>>>
>>>
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>>>
>>>
>>>
>>>
>>
>>
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>
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