[asterisk-users] Rotary phone on Asterisk

[Joel Maslak]

My understanding was that pulse dialing from a channel bank was "iffy", but
not pulse reception, so long as the channel bank properly reports on/off
hook state - that there is no real "pulse detection" in the channel bank,
simply on/off hook status (looking at some of my documentation, "real" D-2,
D-3, and D-4 channel banks all used the LSB in the 6th code word to indicate
on/off hook status).  Is this no longer correct?  I'm using ESF, although I
think D4 would work similarly for this function.

I will contact Rhino as well, though - just to cover my bases.  I was very
impressed with their support previously.

On Fri, Sep 17, 2010 at 12:56 PM, John Novack <jnovack at stromberg-carlson.org
> wrote:

>
>
> Danny Nicholas wrote:
>
>   ------------------------------
>
> *From:* asterisk-users-bounces at lists.digium.com [
> mailto:asterisk-users-bounces at lists.digium.com<asterisk-users-bounces at lists.digium.com>]
> *On Behalf Of *Joel Maslak
> *Sent:* Friday, September 17, 2010 12:29 PM
> *To:* Asterisk Users Mailing List - Non-Commercial Discussion
> *Subject:* [asterisk-users] Rotary phone on Asterisk
>
>
>
> I'm trying to use a couple of old Western Electric type 500 phones (desk
> model, rotary dial).  These phones work fine, as tested with telco lines
> (they dial, receiver/transmitter works fine, etc).
>
> I'm running Asterisk 1.6.2.11.
>
> I can't get them to dial through Asterisk.  They are connected to a Rhino
> channel bank which is connected to Asterisk via a Sangnoma card (T1 with
> echo cancellation).  Other phones (touch tone) work fine, as does any phone
> with a pulse/tone switch, even when these electronic phones are in "pulse"
> mode.
>
> I'm thinking that Asterisk is a bit too picky about the timing of the
> rotary dial pulses to handle a mechanical system.  Is there any way to
> correct this?
>
>
>
> Check this out
>
> http://www.voip-info.org/wiki/index.php?page=Asterisk+zaptel+pulse+dialing
>
>
>
> Better read the link
> That refers to the TDM400 card. Posted to voip-info quite a few years ago,
> I believe it MIGHT have made it into a recent release, or coming soon.
>
> For T1 though, I believe the channel bank might be the issue.
> We have several channel banks of various types with various T1 cards.
> Adtran 750's aren't supposed to work properly, according to Adtran, other
> companies do.
> Better ask Rhino first, as the pulse detection and timing is a channel bank
> issue.
>
> 500 sets are pretty good with pulse speed and make/break ratio.  The #9
> dials are even better than the #7 ones, though all are fairly stable.
> Older phones, WE or others, can be more difficult, and may need to be
> repaired.
>
>
> John Novack
>
> --
>
> Dog is my Co-pilot
>
>
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