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  • Juan Ortega, Thu 15 of May, 2008 [10:33 UTC]: Hi everybody, I'm Juan, an ITCom student, and I need to know what basic elements I need to create a VoIP network. Can anybody helpme, please?,Thank you very much
  • gineta, Wed 14 of May, 2008 [03:58 UTC]: any here not fine the configuration of firewall juniper -screem for VOIP asterisk????
  • Anoop Prabhakaran, Tue 13 of May, 2008 [12:16 UTC]: I am developing Asterisk IVR, Whenever i make a internation call to the IVR system, the DTMF is not getting detected properly, this happens only for the first time, second call onwards system works fine. why this is happening
  • joe, Mon 12 of May, 2008 [04:27 UTC]: Is there an opensource browser based softphone, or a system like Busta where everything is not manages through their website?
  • Nick Barnes, Fri 09 of May, 2008 [11:36 UTC]: Christopher - yesterday I tried an Asterisk install on a CentOS 5.1 box with stock GUI and it all worked fine. Sorry I can't help.
  • aero, Fri 09 of May, 2008 [08:20 UTC]: can someone help me out on this, i tried to play some sound files on my asterisk box and this is the error message i got. WARNING[4429]: format_wav.c:169 check_header: Unexpected freqency 22050 May 8 11:17:39 WARNING[4433]: codec_gsm.c:194 gsmtolin_fra
  • Christopher Faust, Thu 08 of May, 2008 [14:15 UTC]: I beleive that I may have to change something in the xserver configuration. Please advise
  • Christopher Faust, Thu 08 of May, 2008 [14:14 UTC]: Everything was perfect. In the bios I have increased the memory allocated Still receive input not supported on my display.
  • Christopher Faust, Thu 08 of May, 2008 [14:13 UTC]: This would not be my main box. I am doing some testing to see if I can install zaptel and asterisk 1.4 on a full centos 5.1 box with development software Its bizzare, because before I went through the asterisk and zaptel installation everything was perfe
  • Nick Barnes, Thu 08 of May, 2008 [13:44 UTC]: Christopher - I can't see any way in which an Asterisk installation would muck your GUI, but remember that it is advised not to use a GUI on an Asterisk box anyway.
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Dial Pulse to Touchtone DTMF Converters

Many VOIP devices with FXS ports do not support traditional rotary dial phones.
One possible solution (untested) is a Dial pulse to DTMF (Touchtone) converter between the rotary dial phone and the VOIP FXS port

Example:

  • Dial Pulse Phone <-----> Pulse to DTMF converter <-----> VOIP FXS port on Sipura 2000

Some possible choices:
  • TelSoft VOIP Pulse To Tone Adapter (Plug and Play)
  • Mitel Smart-1 dialer (requires programming)
  • Sandman PULSE TO TONE CONVERTER
  • Panasonic KX-TA624 hybrid key system
    • Factory-default configuration will convert pulse dialing on an extension to DTMF on an outgoing CO port. Unit supports 10 or 20 pps dials.
    • Note: Early model KX-TA624 units tend to spontaneously reboot when ringing old-style electromechanical ringers. This seems to be related to inductive spikes rather than power consumption. The late-model KX-TA624-5 does not have this problem.

Known to work, tested:
  • LPT-300 - Pulse to Tone converter - http://www.dialerbuddy.com/lpt300.htm Approx $50
    • Thoughts on this: This is a simple unit. Do not put this in line where the upstream carrier supports both pulse and dtmf, as that will register double-digits dialed. It works flawlessly otherwise.
Created by jht2, Last modification by Scott on Tue 08 of May, 2007 [22:21 UTC]

Comments Filter

UTStarCom Ian-02ex works with rotary!

by markosjal on Tuesday 04 of December, 2007 [21:22:04 UTC]
I have an UTStarCom ian-02ex that was originally from Lingo. I discovered by accident that it does rotary dialing with no problems. I will be connecting it permanently to a 1960s vintage rotary wall phone soon.

TelSoft Converters

by Ian Jolly on Wednesday 11 of July, 2007 [18:48:41 UTC]
I bought one of these - the carriage outside the US exceeds the cost of the unit - BEWARE they only send by UPS - cost US$53.95 for the unit plus US$56.00 carriage and the UK Customs charge import tax on the total price !!

They also produce versions for use with the New Zealand reverse pulse dial and another for the Swedish 'reverse' pulse dial.

Programming details

by Don Froula on Wednesday 25 of October, 2006 [22:29:25 UTC]
Can anyone provide programming suggestions for the Mitel Smart-1 to act as a passthrough pulse to DTMF converter? The programmingappears quite complex.

by dave1216 on Friday 09 of June, 2006 [11:41:09 UTC]

by dave1216 on Thursday 08 of June, 2006 [23:45:58 UTC]
Mitel Smart-1 dialer = $18?

Now the website says $35.95, surely it hasn't gone up THAT much in a year

What works and what doesn't.....

by MrKenmore on Saturday 02 of July, 2005 [02:54:03 UTC]
I have done extensive experimentation on this subject. I have Vonage and the Linksys RT31P2 adapter. The pulse to tone converter from Sandman does not work. The Mitel Smart-1 does indeed work. It does take some programming and an RS232 cable will help tremendously. All programming can be done through hyperterminal. Be advised that the downloadable manual from dialerbuddy website is for a later model. The manual is 2000 and the software on the machine I received is 1991. So some things are different. You can also do a whole bunch of other things with the Mitel. Definitely worth it. Good luck and keep those rotariy phones alive.

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