Dismiss Notice
We would like to remind you that we’re updating our login process for all 3CX forums whereby you will be able to login with the same credentials you use for the Partner or Customer Portal. Click here to read more.

Grandstream GXW4104 Problem - HELP!!!

Discussion in '3CX Phone System - General' started by newpool, Jul 2, 2009.

Thread Status:
Not open for further replies.
  1. newpool

    Joined:
    Mar 13, 2009
    Messages:
    11
    Likes Received:
    0
    Hi Guys,

    I'm really hoping you can help me - I'm fresh out of ideas.

    I have a site with 3 BT Lines (BT being the UK PSTN operator for those outside the UK) connected to a Grandstream GXW-4104 FXO gateway running the 3CX supported version of code. Most of the time, all is well, but one user is constantly having problems with calls made or received using this gateway.

    The problem is being reported as one party being very quiet or one side not being heard at all for several seconds. the odd thing is this issue seems to primarily affect one user only (although I'm not 100% convinced) and I have replaced that users handset twice, but no change. The problem isn't on every call but it is happening several times during the day depending on he number of calls placed or received. All IP only calls are fine.

    I'm now at the stage where I'm considering swapping out the Grandstream - unless anyone has any better ideas.

    All the phones, gateway & 3CX PC are connected to the same Netgear PoE Switch so I dont think I have LAN congestion issues - certainly no other calls are affected. I have also proven that the RTP stream is between the Phone and the gateway so there is no transcoding going on.

    Any suggestions no matter how stupid they sound would be great.

    Thanks in advance!
     
  2. leejor

    leejor Well-Known Member

    Joined:
    Jan 22, 2008
    Messages:
    11,116
    Likes Received:
    329
    Try swapping out all hardware, one piece at a time, that you can, to eliminate the problem. Does this one user have exclusive access to that one FXO port or does everyone else use it as well?
     
  3. ec268

    Joined:
    Apr 18, 2009
    Messages:
    22
    Likes Received:
    0
    I would suggest you to check out the network connection for that particular user. Seems the netowrk transmition is not efficiency.
     
  4. voipbaennjer

    Joined:
    Jul 10, 2009
    Messages:
    44
    Likes Received:
    0
    Check latency of all network devices using ping.
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  5. wzaatar

    Joined:
    Aug 1, 2007
    Messages:
    90
    Likes Received:
    0
    There can be a variety of issues there. Don't just blame the box straight.

    Are you using any QoS? How about STP/VLANs? Is connectivity ok?

    I think you need to do some troubleshooting.
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
Thread Status:
Not open for further replies.