Started by UserAsdf, July 02, 2012, 01:08:44 AM
QuoteThere are two Codec Profiles available on OBi devices. They are selectable Per Trunk (SP1/SP2/SP3/SP4/OBiTALK). To select a codec as the preferred codec in this profile, set the priority of that codec to be highest among all the enabled codecs in this profile. Each of the SP1, SP2, SP3, SP4, and OBiTALK services can be assigned a codec profile in its corresponding configuration. The codec list to use when setting up a call on the underlying service is formed from the list of enabled codecs in the chosen profile and ordered according to the assigned priorities in the profile.
Code25Default = Force G711u Codec Star Code *4711, Use G711 Only, set($Cdm1,3)Code26Default = Force G729 Codec Star Code *4729, Use G729 Only, set($Cdm1,4)
Quote from: Ostracus on July 03, 2012, 10:26:27 PMWhat would be nice to debug any problems is a faxing endpoint that one can fax to and see what's received on the other end. As well as fax back so one can see the same.
Quote from: Ostracus on July 03, 2012, 10:26:27 PMThere is also a star code for forcing a codec on a per call basis.
Quote from: Ostracus on July 03, 2012, 10:26:27 PMAnd I believe someone had mentioned that a provider that does T.38 (Callcentric does) may be needed for reliable faxing.
Please note that the codec is limited to G711u only for all calls.
Quote from: UserAsdf on July 04, 2012, 04:20:21 PMI've already tried disabling all codecs except T.38 a few days ago. That resulted in an error message saying something about the service provider not supporting the call or something.
Quote from: UserAsdf on July 02, 2012, 02:02:01 PMAt all times, the call status page shows G711 is in use. I would try forcing T.38 if I knew how.
Quote from: UserAsdf on July 04, 2012, 05:00:31 PMThe fax never even begins transmission because the answering fax machine's tones are being cut off by the Obi202 almost immediately.
Quote from: QBZappy on July 05, 2012, 08:56:39 AM1) You are certain that that the Service Provider supports T38 codec? From this reply it doesn't sound like it. Just to be clear, was it the OBiMAN voice or a CC voice message?
Quote from: QBZappy on July 05, 2012, 08:56:39 AM2) You obviously have followed the CC fax FAQ (http://www.callcentric.com/faq/30#205 )Fax Machine: Try using the slowest possible speed on your fax machine. Normally 9.6k or 14.4k would be the best options, as speeds faster than 14.4k may not work properly with faxing. Disable error correction
Quote from: QBZappy on July 05, 2012, 08:56:39 AMT.38: Enable T.38.Disable echo cancellation and echo suppression. If available enable re-INVITE for faxesPass through:Try using the G711 codecs as these would offer more bandwidth.Disable echo cancellation and echo suppression Disable NSE, usually on Cisco/Linksys devices
Quote from: QBZappy on July 05, 2012, 08:56:39 AMI show a way how to force T38 codec up above. I assume you did the exact thing. You are certain that the fax is going over the CC trunk. I would try **1 or **2 before the fax number just to make sure you force it over the correct trunk. Since it shows using G711 it might be going over your GV account (if you have one, you didn't mention it).
Quote from: UserAsdf on July 05, 2012, 01:44:41 PMWindows 7 Fax & Scan won't allow me to change the fax or port speed of my usb faxmodem, but I'm not sure if that's relevant when fax negotiation never even occurs due to the answering fax tones being silenced by the Obi202.