DeltaBravo22
asked on
Voip call quality issue
I have one very large site 50 staff, with asterisk based SwitchVox PBX system, and one small office with 3 staff / 3 phones.
The sites are connected with comcast ethernet, traffic goes from local company switch through comcast connection to local company switch.
Analog call (small remote office B) -> audiocodes (small remote office B) -> ethernet switch (small remote office B) -> ethernet switch (large main office A) -> router (large main office A) -> PBX (large main office A).
At the PBX there is a rule that sends the traffic back to staff at the small distant office, so the entire connection looks like this.......
Analog call (small remote office B) -> audiocodes [ VLAN 1] (small remote office B) -> ethernet switch (small remote office B) [ VLAN 1] -> ethernet switch (large main office A) -> router (large main office A) -> PBX [ VLAN 2] (large main office A) -> router (large main office A) -> ethernet switch (large main office A) -> ethernet switch (small remote office B) [ VLAN 1] -> VOIP desk phone extension (small remote office B).
When the calls come in and reach the PBX, they are fine. The quality is fine. The recording played by the PBX is crystal clear. But when the calls get routed back over the same path to an individual extension at the small remote office and connect, the voices sound garbled. The call is connecting, the caller and receiver of the call can hear and speak to each other. But it's nearly unintelligible.
The PBX has definitive errors in the logs which will help define this. I can do packet captures and grab specifics of the conversation but I'm not conversant in telecom at this level. I know enough here to communicate the issues succinctly though.
It worked 2 weeks ago, using this same route. But troubleshooting technicians have been in our system for other reasons and now we have this problem.
The sites are connected with comcast ethernet, traffic goes from local company switch through comcast connection to local company switch.
Analog call (small remote office B) -> audiocodes (small remote office B) -> ethernet switch (small remote office B) -> ethernet switch (large main office A) -> router (large main office A) -> PBX (large main office A).
At the PBX there is a rule that sends the traffic back to staff at the small distant office, so the entire connection looks like this.......
Analog call (small remote office B) -> audiocodes [ VLAN 1] (small remote office B) -> ethernet switch (small remote office B) [ VLAN 1] -> ethernet switch (large main office A) -> router (large main office A) -> PBX [ VLAN 2] (large main office A) -> router (large main office A) -> ethernet switch (large main office A) -> ethernet switch (small remote office B) [ VLAN 1] -> VOIP desk phone extension (small remote office B).
When the calls come in and reach the PBX, they are fine. The quality is fine. The recording played by the PBX is crystal clear. But when the calls get routed back over the same path to an individual extension at the small remote office and connect, the voices sound garbled. The call is connecting, the caller and receiver of the call can hear and speak to each other. But it's nearly unintelligible.
The PBX has definitive errors in the logs which will help define this. I can do packet captures and grab specifics of the conversation but I'm not conversant in telecom at this level. I know enough here to communicate the issues succinctly though.
It worked 2 weeks ago, using this same route. But troubleshooting technicians have been in our system for other reasons and now we have this problem.
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