Hi bipin singh, I am not a person who would say something offensive to some strangers on the internet usually, but seriously i always notice that you keep giving these one-line replies which is not helpful at all to the discussion.
On Aug 6, 2011, at 11:01 AM, bipin singh <[email protected]> wrote: > Hi , > First check your link fax enable or not . > > On Fri, Aug 5, 2011 at 11:21 PM, Kevin P. Fleming <[email protected]> > wrote: > On 08/05/2011 12:06 PM, Robert Thomas wrote: > > I'm refering to the audio hook implemented to the detect the V21 > preamble fax on the T38 gateway implementation on asterisk 1.10. > > I think it depens whether they refer to fax detection to disable echo > cancellation, or to renegotiate to T38. > > Neither. In most cases, 'FAX detection' in Asterisk used to to redirect the > channel to a different extension in the dialplan. This is done by detecting > CNG, so that the destination of the call can be changed to one that is able > to handle the FAX transaction. Asterisk does not handle echo canceller > reconfiguration for FAX at all; that's done by DAHDI or the echo cancellers > themselves. > > > Is the fax audio hook detection responsibility of the channel used, > chan_dahdi or chan_ss7? > > CNG detection is the responsibility of the channel driver; V.21 preamble > detection is handled by the FAX gateway code, and can be used on any channel > type. > > > -- > Kevin P. Fleming > Digium, Inc. | Director of Software Technologies > Jabber: [email protected] | SIP: [email protected] | Skype: kpfleming > 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA > Check us out at www.digium.com & www.asterisk.org > > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > asterisk-ss7 mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-ss7 > > > > -- > BIPIN RAGHUVANSHI > OPERATION HEAD > ASTERISK (DEVELOPMENT AND RESEARCH) > WWW.EHORIZONS.IN > 011-32323262 > 011-46334633 > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > asterisk-ss7 mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-ss7
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