Probably, because you are then less susceptible to the variables of SIP trunking. Given you have some PAP2T's I would suggest you just test it. Set codec to ulaw or alaw, turn off echo cancel and set jitter buffer to low.
Good luck. David On Thu, May 27, 2010 at 9:35 AM, Tom Chadwin <[email protected] > wrote: > As always, I needed to be clearer in my description. Our only trunking is > ISDN PRI. We are only using SIP/IAX internally. So, would a PAP2T (various > of which I currently use for voice) work well as the bridge between our > internal analogue fax and our internal Astlinux box, sending and receiving > faxes externally via ISDN? > > Thanks > > Tom > > > ------------------------------ > *From:* David Kerr [mailto:[email protected]] > *Sent:* 27 May 2010 14:28 > *To:* [email protected]; AstLinux Users Mailing List > *Subject:* Re: [Astlinux-users] Faxing > > The answer is "it depends." I have had success with a fax machine > connected to a linksys PAP2T ATA and routing through vitelity as the SIP > trunk provider (with Astlinux in-between). I have had complete failure with > an older Linksys/Sipura SPA-2002 and the same SIP trunk. > > I have both a PAP2T and SPA-2002 connected to my system and the audio > quality is noticeably better on the PAP2T. In particular there is a lot of > background hiss from the SPA-2002 that is not present on the PAP2T. That > may also suggest that the dynamic range of the SPA-2002 is not as strong as > the PAP2T. Both the background hiss and a compressed dynamic range would > explain why analog fax does not work well. > > In addition to good A to D conversion, which the PAP2T seems to handle > well, you then have to deal with the characteristics of SIP/VoIP. You may > have to fiddle with settings like jitter buffer and echo cancelling and you > want a high quality trunk provider. > > Good luck. > > David > > > On Thu, May 27, 2010 at 8:17 AM, Tom Chadwin < > [email protected]> wrote: > >> Slightly OT... >> >> With an uncustomized 0.7.2 (1.4) on a net5501 with a berofix PRI, what is >> the easiest way to attach an analogue fax which currently uses one DDI on >> the UK PRI? Will an ATA work? >> >> Thanks >> >> Tom >> >> >> >> ------------------------------------------------------------------------------ >> >> _______________________________________________ >> Astlinux-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/astlinux-users >> >> Donations to support AstLinux are graciously accepted via PayPal to >> [email protected]. >> > > > > ------------------------------------------------------------------------------ > > > _______________________________________________ > Astlinux-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/astlinux-users > > Donations to support AstLinux are graciously accepted via PayPal to > [email protected]. >
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