Ryan Posted September 14, 2007 Report Share Posted September 14, 2007 I have a Grandstream HandyTone-486. I can make calls out to normal phones (e.g. a cell phone), but I can't hear anything. The person on the cell phone receiving my call can hear me fine, but I can't hear them. I have setup the phone fine accoring to our network, any ideas what this problem could be? Thanks in advance, Ryan Quote Link to comment Share on other sites More sharing options...
Detlef Posted September 14, 2007 Report Share Posted September 14, 2007 You registered the Grandstream as extension? I would check what codec it is using, routing and connectivity between pbx and Grandstream, maybe a firewall inbetween, STUN settings... I had something similar with audio in only one direction (not with a Grandstream) and it was because of the low bandwidth codec g.729 (18) which has to be purchased separately in pbxnsip. Detlef Quote Link to comment Share on other sites More sharing options...
Ryan Posted September 18, 2007 Author Report Share Posted September 18, 2007 Thanks for your reply, Detlef. I have checked most of that stuff out and to no avail. It seems to be a pbxnsip issue as we've had this issue before. Not sure why it is but I'm going to also post in the main. Ryan You registered the Grandstream as extension? I would check what codec it is using, routing and connectivity between pbx and Grandstream, maybe a firewall inbetween, STUN settings... I had something similar with audio in only one direction (not with a Grandstream) and it was because of the low bandwidth codec g.729 (18) which has to be purchased separately in pbxnsip. Detlef Quote Link to comment Share on other sites More sharing options...
snom Canada Posted October 8, 2007 Report Share Posted October 8, 2007 Thanks for your reply, Detlef. I have checked most of that stuff out and to no avail. It seems to be a pbxnsip issue as we've had this issue before. Not sure why it is but I'm going to also post in the main. Ryan Make sure you use G.711u on all codec choice and do not use STUN or any nat traversal feature. What is the version of pbxnsip? Digisoft VOIP Quote Link to comment Share on other sites More sharing options...
Ryan Posted October 10, 2007 Author Report Share Posted October 10, 2007 On the phone I was testing with, it was a Grandstream BT100, rev. 02. I had the same problem with another cheaper grandstream setup as well. I don't have the option of using the G.711 codec on this phone. The default codec, which we are using, is G.722 (wide band). Other options are G.723.1, G.729A/B, PCMU, PCMA, iLBC, and G.726-32. Any other ideas? I appreciate the help. Ryan Make sure you use G.711u on all codec choice and do not use STUN or any nat traversal feature. What is the version of pbxnsip? Digisoft VOIP Quote Link to comment Share on other sites More sharing options...
Vodia PBX Posted October 10, 2007 Report Share Posted October 10, 2007 PCMU, PCMA == G.711 ... If you continue to have problems, it makes sense to run Wireshark in the network to identify the problem. Quote Link to comment Share on other sites More sharing options...
Patel Posted February 29, 2008 Report Share Posted February 29, 2008 PCMU, PCMA == G.711 ... If you continue to have problems, it makes sense to run Wireshark in the network to identify the problem. I also have a similar problem. What's wireshark by the way? Quote Link to comment Share on other sites More sharing options...
Vodia PBX Posted February 29, 2008 Report Share Posted February 29, 2008 What's wireshark by the way? Check out http://www.wireshark.org. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.