[VoIP] Bizarre Problem

[Lee Spenadel]

Sorry for the confusion. 

Components and route of call:

Rotary POTs set (touch-a-matic rotary phone) dials 349-8693
Adtran TA850/channel 7 (FXS card configured for FXO signalling)
Asterisk T-1 card /zap 7
Route Call via Extensions.conf
Asterisk T-1 card /zap 21
Adtran TA850/channel 21 (FXO card configured for FXS signalling)
Extension 695 on SxS Switch

When I put a butt set (in monitor mode) on channel 21 and go off-hook on the
touch-a-matic rotary set and dial any extension on the Step switch, I get
tone output, not pulse.

Hope this clears things up.
Lee


-----Original Message-----
From: voip-bounces at ckts.info [mailto:voip-bounces at ckts.info] On Behalf Of
ikjtel
Sent: Monday, March 19, 2007 11:35 AM
To: Voice Over IP Tandem for Analog Switches
Subject: Re: [VoIP] Bizarre Problem


Sorry to say, I found the below writeup rather
confusing.

There are other questions, but let's zero in on this
one area first:
 
> I attached a butt set to my TA channel 21 and
> monitored while I went
> off-hook with a rotary set and dialed a SxS
> extension.  What I heard was not
> pulse, but DTMF. 

What do you hear from listening in the handset of the
"rotary" set?  DTMF or rotary?  Can you supply a list
of all component(s) in the path between the rotary set
and the butt set in this setup?  If the butt set is
holding open the loop towards the SxS machine and is
also furnishing the outpulsing (ignoring for the
moment whether said outpulsing is tone or pulse), then
it should be possible to disconnect the FXO card from
the configuration entirely.  Once that has been done
and if you're still hearing DTMF, it's not possible
for the DTMF to have been generated by any unit that
has anything to do with zaptel or asterisk...

Note, there *is* a capability within zaptel or
asterisk (I can't remember which, due to advanced
C.R.S.) that will generate DTMF outward on behalf of a
dumb rotary-only phone plugged into asterisk via a
zaptel-supported FXS port....  This enables the dumb
rotary phone to access remote banking services and
voice mail and so forth.  If the user of the rotary
phone wishes to transmit a '*' or '#' key, it's not
clear how they're supposed to do so, perhaps they
assume the rotary phone is equipped with the special
W.E. model "17S3" rotary dial equipped with the two
extra finger holes ;-)

Max


 
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