Path: utzoo!attcan!utgpu!watmath!att!bellcore!rutgers!apple!gem.mps.ohio-state.edu!wuarchive!texbell!vector!telecom-gateway From: john@zygot.ati.com (John Higdon) Newsgroups: comp.dcom.telecom Subject: Re: 10-Cent Pay Phones Message-ID: Date: 21 Sep 89 02:52:57 GMT Sender: news@vector.Dallas.TX.US Organization: Green Hills and Cows Lines: 28 Approved: telecom-request@vector.dallas.tx.us X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@vector.dallas.tx.us X-TELECOM-Digest: volume 9, issue 391, message 2 of 9 In article , vicorp!charlie@uunet.uu. net (Charlie Goldensher) writes: > Incidentally, does anyone know why I might not be able to use > the 10xxx access codes? Could it be related to the fact that > we only have pulse-dialing (or some other aspect of our antiquated > system)? Or should I complain to Nynex? When I try one of the > codes, I get a (fast, I think) busy signal. It is related in so far as a general rule of thumb: If your CO equipment doesn't do DTMF, then it is too antiquated for equal access. All CO switches can be adapted to accept DTMF, but those that have to be adapted don't intrinsically do 10XXX dialing. To my knowledge, there are no SXS offices operating FGD (feature group D). No. 5 crossbar can be adapted for it with an adjunct called CONTAC (we have a lot of that here). However, if CONTAC is installed, then the switch will do DTMF, since that's how the adjunct communicates with the crossbar's originating registers. CONTAC itself would rather see DTMF from the subscriber. It is very intolerant of off-speed rotary dials. Pulses must fall between 8-12 pps or the call will fail (no 20 pps dialing). All electronic switches (ESS, DMS, EAX, etc.,) can run software that supports FGD and all electronic switches intrinsically accept DTMF. John Higdon | P. O. Box 7648 | +1 408 723 1395 john@zygot.ati.com | San Jose, CA 95150 | M o o !