[Asterisk-Users] Re: [Asterisk-biz] Problem with sending fax from a SIP extension

C F shmaltz at gmail.com
Wed Sep 28 18:44:53 MST 2005


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 at gmail.com> wrote:
> On 9/27/05, C F <shmaltz at 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 at 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 at lists.digium.com
> > > [mailto:asterisk-biz-bounces at lists.digium.com] On Behalf Of C F
> > > Sent: Tuesday, 27 September 2005 9:42 AM
> > > To: andy at 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 at 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?
>



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