[asterisk-users] Rotary phone on Asterisk

[John Novack]

Danny Nicholas wrote:
> ------------------------------------------------------------------------
>
> *From:* asterisk-users-bounces at lists.digium.com 
> [mailto: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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