Hi all, I have setup a Dell PowerEdge 2550 with a Sangoma A200 card with 2xFSO and 1XFS modules.
The PowerEdge specs are 1 x P3 1133MHz, 512MB RAM. Sangoma A200 has 3 analogue PSTN lines connected. This server is based in Office 1, with 5 users all with a Linksys SPA942 VoIP Handset. There is another Office (Office 2) connected to here using VPN. There are two users in Office 2 with the Linksys SPA942 VoIP Handsets, they are connected also over VPN to the remote Trixbox. When placing calls from either Office 1 or Office 2 calls are fine, there is echo to start with (Echo training) but then it clears. Volume is ok, quality is ok. However when an incoming call is made to the office the quality is pretty bad, crackles, low volume. There has also been mention (In office 1) of some cross talk. The Trixbox is plugged into the master switch in the server room, where the various production servers are running, and all workstations are also connected directly to the switch. Is there any reason why I should be experiencing such bad line quality on inbound calls from PSTN? Call quality is perfect when plugging in a regular analogue phone. I am in the process of having all the VoIP handsets in Office 1 connected directly to its own switch, and then connected to the Trixbox directly to avoid server/workstation bandwidth issues, but I don't think would solve the quality issues. Is the PowerEdge powerful enough to handle the VoIP traffic. I am really at an end with this, and really need to find a solution. Any help, advice or pointers would be greatly welcomed. Thanks, PaulG.
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