Jonathan k. Creasy
2005-Sep-29 07:01 UTC
[Asterisk-Users] Re: [Asterisk-biz] Problem with sending fax froma SIP extension
Why is what he is doing different than having the fax machine on a Sipura ATA? Just because both those ports are on the pci card that doesn't make them not Voice in between....if I'm wrong....eh...oh well.... -----Original Message----- From: asterisk-users-bounces@lists.digium.com [mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of C F Sent: Wednesday, September 28, 2005 9:45 PM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [Asterisk-Users] Re: [Asterisk-biz] Problem with sending fax froma SIP extension Before responding please read my message again, in my message I worte: 'faxing over VoIP' what you are doing is NOT over VoIP. On 9/28/05, u <calanet@gmail.com> wrote:> On 9/27/05, C F <shmaltz@gmail.com> wrote: > > 1. Search the archives > > 2. Search again > > 3. Now search the internet > > 4. The fact is that faxing over VoIP without T.38 doesnt reallywork.> > Because it works 60% of the time it doesn't mean that it works,until> > it works 99% of the time. > > Since Asterisk does NOT support T.38 it doens't support faxing over > > VoIP other solutions are available, search the wiki. > > > > > > On 9/26/05, Mark Armstrong <marmstrong@accaustralia.com.au> wrote: > > > I am having exactly the same problem. Any information would beappreciated.> > > Faxing is a commercial proposition that my team is working on, any > > > limitations of Asterisk or E1 cards needs to be highlighted. > > > > > > > > > Regards > > > > > > Mark > > > > > > > > > > > -----Original Message----- > > > From: asterisk-biz-bounces@lists.digium.com > > > [mailto:asterisk-biz-bounces@lists.digium.com] On Behalf Of C F > > > Sent: Tuesday, 27 September 2005 9:42 AM > > > To: andy@akuo.ca; Commercial and Business-Oriented AsteriskDiscussion> > > Subject: Re: [Asterisk-biz] Problem with sending fax from a SIPextension> > > > > > why don't you post this to asterisk-users? > > > > > > On 9/22/05, Andy Kuo <akuoca@gmail.com> wrote: > > > > Hi All, > > > > > > > > I'm having problem sending fax from SIP extensions (LinksysPAP2)> > > > through Asterisk Zap channels (ISDN PRI). > > > > The SIP extensions can receive fax without problems, but sendingfax> > > > fails most of the time. > > > > > > > > Does anyone have this problem? > > > > > > > > Please advice. > > > > Thank you. > > > > AK > I have a fax connected to a zaptel pci card (FXS). Fax are sent right > into an FXO card connected to my PSTN. I don't experience problems > but then again I am a light user. > Just out of curiosity, is the problem related to sending FAX via IAX > or SIP to another asterisk server? > if asterisk will support T.38 passthru to say Hylax Fax, does that > mean I need a Hylax fax daemon in every asterisk server? >_______________________________________________ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Tom Hayden
2005-Sep-29 07:12 UTC
[Asterisk-Users] Re: [Asterisk-biz] Problem with sending fax froma SIP extension
Well, I think what he means is that it's not VoIP, because you are using TDM on both ends. It looks like this: fax machine -> TDM -> * -> TDM -> PSTN If you had a SIP ATA attached to a fax machine, you would be using VoIP. That would look like this: fax machine -> SIP/VoIP -> * -> TDM -> PSTN I have found using faxes over any VoIP to be *extremely* unreliable. SpanDSP works pretty good, but you won't have much luck using a fax SIP extension. Cheers, -- Tom On 9/29/05, Jonathan k. Creasy <jonathan@bluegrass.net> wrote:> Why is what he is doing different than having the fax machine on a > Sipura ATA? > > Just because both those ports are on the pci card that doesn't make them > not Voice in between....if I'm wrong....eh...oh well.... > > -----Original Message----- > From: asterisk-users-bounces@lists.digium.com > [mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of C F > Sent: Wednesday, September 28, 2005 9:45 PM > To: Asterisk Users Mailing List - Non-Commercial Discussion > Subject: Re: [Asterisk-Users] Re: [Asterisk-biz] Problem with sending > fax froma SIP extension > > Before responding please read my message again, in my message I worte: > 'faxing over VoIP' what you are doing is NOT over VoIP. > > On 9/28/05, u <calanet@gmail.com> wrote: > > On 9/27/05, C F <shmaltz@gmail.com> wrote: > > > 1. Search the archives > > > 2. Search again > > > 3. Now search the internet > > > 4. The fact is that faxing over VoIP without T.38 doesnt really > work. > > > Because it works 60% of the time it doesn't mean that it works, > until > > > it works 99% of the time. > > > Since Asterisk does NOT support T.38 it doens't support faxing over > > > VoIP other solutions are available, search the wiki. > > > > > > > > > On 9/26/05, Mark Armstrong <marmstrong@accaustralia.com.au> wrote: > > > > I am having exactly the same problem. Any information would be > appreciated. > > > > Faxing is a commercial proposition that my team is working on, any > > > > limitations of Asterisk or E1 cards needs to be highlighted. > > > > > > > > > > > > Regards > > > > > > > > Mark > > > > > > > > > > > > > > > > -----Original Message----- > > > > From: asterisk-biz-bounces@lists.digium.com > > > > [mailto:asterisk-biz-bounces@lists.digium.com] On Behalf Of C F > > > > Sent: Tuesday, 27 September 2005 9:42 AM > > > > To: andy@akuo.ca; Commercial and Business-Oriented Asterisk > Discussion > > > > Subject: Re: [Asterisk-biz] Problem with sending fax from a SIP > extension > > > > > > > > why don't you post this to asterisk-users? > > > > > > > > On 9/22/05, Andy Kuo <akuoca@gmail.com> wrote: > > > > > Hi All, > > > > > > > > > > I'm having problem sending fax from SIP extensions (Linksys > PAP2) > > > > > through Asterisk Zap channels (ISDN PRI). > > > > > The SIP extensions can receive fax without problems, but sending > fax > > > > > fails most of the time. > > > > > > > > > > Does anyone have this problem? > > > > > > > > > > Please advice. > > > > > Thank you. > > > > > AK > > I have a fax connected to a zaptel pci card (FXS). Fax are sent right > > into an FXO card connected to my PSTN. I don't experience problems > > but then again I am a light user. > > Just out of curiosity, is the problem related to sending FAX via IAX > > or SIP to another asterisk server? > > if asterisk will support T.38 passthru to say Hylax Fax, does that > > mean I need a Hylax fax daemon in every asterisk server? > > > _______________________________________________ > --Bandwidth and Colocation sponsored by Easynews.com -- > > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > _______________________________________________ > --Bandwidth and Colocation sponsored by Easynews.com -- > > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users >-- Tom