nanog mailing list archives

Re: Any experience with Comcast digital voice for OOB (offlist is fine)


From: Jay Ashworth <jra () baylink com>
Date: Fri, 28 Feb 2014 23:48:02 -0500 (EST)

----- Original Message -----
From: eric-list () truenet com

Subject: Any experience with Comcast digital voice for OOB (offlist is fine)

You're asking if a VoIP link could be used with traditional modems to do OOB management?

I'm pretty sure the answer is a flat no: any modems faster than 1200 bps
depend on phase change modulations that VoIP codecs can't begin to deal
with; FoIP is implemented by spoofing: the TA detects CNG tone, and spoofs
a datalink. 

I don't know of any TAs that will do that with regular data modems.

Cheers,
-- jra
-- 
Jay R. Ashworth                  Baylink                       jra () baylink com
Designer                     The Things I Think                       RFC 2100
Ashworth & Associates       http://www.bcp38.info          2000 Land Rover DII
St Petersburg FL USA      BCP38: Ask For It By Name!           +1 727 647 1274


Current thread: