Bad voice quality with transferd calls!!

[Niggy]

1. Brekeke Product Name and version:

2. Java version:

3. OS type and the version:

4. UA (phone), gateway or other hardware/software involved:

5. Select your network pattern from http://www.brekeke-sip.com/bbs/network/ ... terns.html :

6. Your problem:

Hi everyone, I'm having a prpblem in voice quality. I can make PSTN>voip calls & vise versa, calls between softphones within our LAN have an excelant quality, calls to/from pstn have good quality, but when i call a pstn line & the callee transfer me to another analog extention the voice quality become so poor.

Ist just me?
How can i improve voice quality?

thanks for all.

[lakeview]

Hi Niggy,

From your explanation, it seems the PSTN has a cause..

How are you connecting the PBX to the PSTN?
Are you using FXO gateway?
or, are you using a VoIP provider??

Let me know it.

[Niggy]

hi lakeview,
well ya am using Grandstraem 4 port FXO to connect PSTN & theres no VoIP provider involved.

what do u think?

[lakeview]

Hi Niggy,

Which audio codec are you using at the Grandstraem gateway?
If you use another audio codec, does a voice quality improve?

[WolfricElkrose]

hi lakeview,
well ya am using Grandstraem 4 port FXO to connect PSTN & theres no VoIP provider involved.

what do u think?

I would suggest upgrading your Grandstream GXW410X to the newest Firmware version 1.0.1.10.

Seems to deal alot with voice quality as well as other 'wierd' issues facing the Grandstream.

You will find it here www.grandstream.com/BETATEST

Still doesn't solve my issues though Niggy, you seem to have solved the 1 stage dialing problem, any way you can pass that knowledge to me

[WolfricElkrose]

Also if you need to do the firmware update, refer to this link for help upgrading the firmware. Warning though, once you update to this version, you cannot downgrade to any previous releases.

http://www.grandstream.com/user_manuals ... Manual.pdf

Wish you the best, and hopefully it helps you to pass along your knowledge of the GXW 410X series

I am still stuck trying to get the GXW4108 to do 1 stage dialing

Wolf