[ratlung]

I have been trying couple of things to get my PSTN-to-VoIP gateway to work. So far with no satisfying results. I read most of the threads in this forum in regards of this problem, and I think I have the PSTN-to-VoIP gateway configured properly. It seems that the DTMF signal that I am sending with my cell phone to the SPA3000 via the PSTN are not getting interpreted correctly.

The symptoms are the following. The SPA3000 picks up my calls, and when I don't have a authentication method enabled, I get another dial tone. I dial the number I would like to reach, but I just get a disconnect signal, and I have to hang up and try again. Similar, when I have a PIN enabled, I get the 3 high pitched tones that indicate that the PIN is expected, but after three trials, I have to hang up. I have the Sipura 3000 System Tray Monitor, but it just tells me that I entered the wrong PIN. My PIN is really easy, so it cannot be.

So my guess is, that the DTMF signal is not interpreted correctly. I tried several PSTN to SPA gains from -10 to +10, no change. I had one successful trial with the standard 0 gain, and the phone on the other end was ringing, but nobody was home :-(. So I know the setup seems proper. I just could not repeat this success. I attached my SPA3000 configuration, and would appreciate any suggestion.

I should mention, I am locate in Taiwan, and I am using Chunghwa Telecom as my landline provider and cell phone provider, I am using web.de as my VoIP provider.

[PhoneBoy]

You probably have a mismatched impedance setting, which will cause this problem to occur. Check with your local telecom authority on what the impedance of any connected devices should be and adjust the FXO Port Impedance (under the PSTN Line tab) to the appropriate value.

[ratlung]

Originally Posted by PhoneBoy

You probably have a mismatched imedpence setting, which will cause this problem to occur. Check with your local telecom authority on what the impedence of any connected devices should be and adjust the FXO Port Impedance (under the PSTN Line tab) to the appropriate value.

Thanks for your suggestion. I just got off the phone, trying all the impedance settings available on the SPA3000. None of them worked, I got the same problem with each setting. Is there a way to find out what the SPA thinks the typed in numbers are? I read in another post, that this person gets double digits etc. I am wondering how I could find out what the SPA understands when I type in my PIN?

[ratlung]

I must appologize, I did a mistake by entering the PIN into the wrong field. Now I got it in the correct field, and the SPA3000 recognizes the PIN properly. I guess there must be still a config error.

My SIP provider allows up to 5 logins, so I tried both ways. Not registering the PSTN line to the SIP server, and allowing calls when not registered, as well as registering the PSTN line. When dialing the VoIP number, the Info dialog tells me that the "VoIP call failed". I will have to do more testing.

[ratlung]

I did a bunch of testing, and this is where I am now.

I posted my current configuration.

1. I can place/receive VoIP and PSTN calls from my analog phone.
2. I can get the SPA to pick up the PSTN, it recognizes the PIN, so
that was an administrator mistake

The symptoms are,

1. When I get the dial tone from the SPA when calling from PSTN, I just dial the number I want to reach via VoIP (area code+phone number) sometimes, the SPA does not seem to recognize any input and the dial tone continues -> so I increased the gain, and it seems to occur less frequent.

2. When it recognizes the input and I finish dialing, it takes a couple of seconds, and I get the disconnect signal.

I tried setting DTMF Process INFO/AVT to "no" - no change,
I tried setting DTMF TX Method to INFO and othe options, the dial tone just stays there when dialing the number.

I am really puzzled by this, and would greatly appriciate any help.

[leejor]

You don't have the "secure" feature turned on do you? I can't break DT after putting in the PIN when I've got that turned on.

[ratlung]

Originally Posted by leejor

You don't have the "secure" feature turned on do you? I can't break DT after putting in the PIN when I've got that turned on.

With "secure" feature, do you mean "Secure Call Serv" in the Line1 menu? I just put it to "no" and there seems to be a change. I will have to try it out, once somebody is awake at home.

[ratlung]

I now tried calling via the PSTN-to-VoIP gateway. I only got a recording that said the number is not in use. But that only happened once. When I check the "VoIP Peer Number" it is the number I have dialed. Still back to square one. Any other suggestions?

[aeplager]

Have you thought of raising the DTMF Playback Level and DTMF Playback Length. I could hear the flash on the phone but I plugged a digit grabber to the line going back in and couldn't hear it very well. I raised both until I could hear them better and I think I'm having better success. I put my level to -5 and my lenght to 0.9 (the exact lenght of a Nortel Flash).

[ratlung]

Originally Posted by aeplager

Have you thought of raising the DTMF Playback Level and DTMF Playback Length. I could hear the flash on the phone but I plugged a digit grabber to the line going back in and couldn't hear it very well. I raised both until I could hear them better and I think I'm having better success. I put my level to -5 and my lenght to 0.9 (the exact lenght of a Nortel Flash).

Thanks for your suggestions. I just tried your suggested settings, but they do not work either. Same thing keeps happening. I really don't know what to do anymore.