No audio for PSTN outgoing calls

[agiannaros]

I am facing the following problem:

When I dial out from PSTN Line (Grandstream GX4104) the line gets connected but there is no audio.
When I receive calls from the same PSTN line audio is OK.
When I am using my VoIP Provider Line audio is OK both for outgoing and incoming calls.
Internal calls work OK.

3CX Version 9 with all updates running on Windows 2008 R2 standard server
Extension Phones Cisco SPA504G and 3CX Phone

Any ideas?

 

[davidbenwell]

Can you reset the Grandstream GX4104 back to factory defaults and have 3CX re-provision the Grandstream GX4104

 

[agiannaros]

Thanks davidbenwell.

You were right. The problem was with the Grandstream's settings. I changed the FXO line settings and the problem was solved.

My problem now is a smaller one: When the outside caller hungs up while 3CX's digital receptionist is answering, the Grandstream doesn't identify it and keeps the line open. I have tried to find the Call Progress Tones for my operator du in United Arab Emirates but I couldn't. I have experimented with many settings but no success. I have cheked in 3AM Systems database, used the settings but nothing.

If anyone has managed to find the Call Progress Tones for du in United Arab Emirates, please help.

Thanks.

 

[leejor]

Do these site help? http://forum.voxilla.com/cisco-linksys-sipura-voip-support-forum/dialtone-united-arab-emirates-etisalat-12151.html

http://lists.digium.com/pipermail/asterisk-bugs/2009-December/063539.html

 

[agiannaros]

Thanks leejor. I have seen this articled and tried them but the settings do not worl for me. These settings are for Etisalat the other operator in UAE. I am using du. I thought it might be the same but the setting do not seem to work:

I am using:
1. Dial Tone: ch1-4:f1=350@-13,f2=440@-13,c=0/0;
2. Ringback Tone: ch1-4:f1=400@-13,f2=450@-13,c=40/20-40/200;
3. Busy Tone: ch1-4:f1=400@-30,f2=0@-30,c=35/35; <-- This is the one used to detect the disconnect tone when Tone Disconnect is enabled.
4. Reorder Tone: ch1-4:f1=400@-30,f2=0@-30,c=0/0;

Thanks