[cisco-voip] Fwd: Faxing over SIP Trunk

[Voice Noob]

Well I don't care which protocol he uses but the way it is configured now is
not working so we should try something diffrent.

On Fri, Jul 11, 2008 at 11:25 AM, Pete Fabian <pfabian at telesphere.com>
wrote:

>  Why not send directly to the voice gateway using SIP.   We have multiple
> PBX's using sip trunks direct to our voice gateways.  Our dial-peer looks
> something like this
>
> dial-peer voice 10001 voip
>
>  modem passthrough nse codec g711ulaw
>
> voice-class codec 711
>
>  incoming called-number .
>
>  dtmf-relay rtp-nte h245-alphanumeric
>
>  fax protocol t38 ls-redundancy 0 hs-redundancy 0 fallback pass-through
> g711ulaw (this is if your pbx supports t38 if it doesn't just use
> pass-through g711ulaw)
>
>  no vad
>
> also
>
> voice service voip
>
>  sip
>
>
>
> *From:* cisco-voip-bounces at puck.nether.net [mailto:
> cisco-voip-bounces at puck.nether.net] *On Behalf Of *Voice Noob
> *Sent:* Friday, July 11, 2008 8:40 AM
> *To:* Nick
>
> *Cc:* Matt Slaga (US); cisco-voip at puck-nether.net
> *Subject:* Re: [cisco-voip] Fwd: Faxing over SIP Trunk
>
>
>
> So is there a way you can go directly to the Call Manager or to the gateway
> as H.323 and remove SIP from the problem?
>
> On Fri, Jul 11, 2008 at 9:40 AM, Nick <csvoip at googlemail.com> wrote:
>
> Correct.
>
> 2008/7/11 Voice Noob <voicenoob at gmail.com>:
>
>
>
> 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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