We terminate our T38 in-house and send t30/711 to our upstream carriers. It works pretty well, but it's not a panacea. In general, we find that T38 fixes some problems, moves some problems from the far end to the fax/ata interface, and invents entirely new ones. ++ on Alex's long fax experience. David On Mon, Dec 12, 2011 at 8:53 PM, Nathan Anderson <nathana at fsr.com> wrote:
So, do T.38 only last-mile to the ATA, then dump it back into the audible domain at our own SBC and pass it to our termination provider as a G.711u call?? Interesting idea...I'll chew on that for a bit.? Thanks.
-- Nathan
________________________________ From: Peter Childs [mailto:PChilds at internode.com.au] Sent: Monday, December 12, 2011 6:59 PM To: Nathan Anderson Cc: voiceops at voiceops.org
Subject: Re: [VoiceOps] T.38 termination provider?
Slightly off topic but from spec sheet the new transcoding NUIs in the low-end ACME SBCs (3820/4500?) in theory can handle T.38 to T.30(ulaw/alaw) interop, so you might be able to 'wrangle' it yourself.
-- ?Peter Childs - Voice Engineer ?Internode/Agile ?Ph: 08 8228 2380 Mb: 0406 388 405 Fax: 08 8235 6801
On 13/12/2011, at 12:26 PM, Nathan Anderson wrote:
Hello,
New to the list. ?I work for a regional broadband ISP who is looking to also become an ITSP.
We are looking for a good SIP termination provider with reasonable rates to all of North America that also happens to guarantee T.38 gateway support for 100% of calls.
Currently, we are using FlowRoute. ?We are happy with the service, but the odds of us hitting a gateway (through one of their upstreams) that will accept our T.38 re-INVITE are about 50/50...not very good.
We tried Gafachi, but that was not a good experience. ?Their rate table is all kinds of screwed-up.
The only other one I've been able to find in my searches is Alcazar Networks. ?Anybody have any first-hand experience with them who can vouch for them as well as their T.38 support for the wholesale termination product?
Other recommendations are also welcome, as well. ?Although we may someday go down the road of loading an LCR table into our SBC, at this point we are looking for a single solid termination provider that will handle 100% of our outbound call volume (a mix of voice and fax); we can fall-back to FlowRoute as a backup solution if the primary provider goes down.
Thanks a million,
-- Nathan Anderson First Step Internet, LLC nathana at fsr.com _______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
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