1 Way Audio | One way Audio | 2 Years Ongoing & Suffering!

[OSM]

I've been dealing with an issue for 2 years that no one can seem to fix and no one can seem to answer. So here is my setup and here is my problem:

PROBLEM:
At the 2 satellite locations I am having 'intermittent' one-way audio that keeps happening. The customer can NOT here us but we can hear them perfectly clear. They get extreme jitter. In the main office though everything is fine - no issues. With all the research I have done and other pros - this is not a bandwidth issue and it happens even without the VPN's connected as well. If it was then audio would be bad both ways.

Also> the 1 satellite office is in a different State and the two satellite offices use 2 different cable companies so I don't believe its coincidence that the same EXACT issue is happening from 2 different providers.

Also> Just to rule out my inside network I replaced the IAD, the Router, & the Allworx Server. At the Phoenix location I have even bypassed the router and still the same issue. I've been dealing with XO's crappy customer service for 2 years and I'm just sick with all the costs involved. Its crazy - saw the other forum from 2011 but it seemed to revolve around the VPN.... Anyone? Anyone out there that can please help!!!???


SETUP
Main Office - Orange County, CA: (XO Communications on AT&T Lines)
T1 Line
1 x Allworx Server w/ Newest Release 7.5 - Model: 6X
3 x Allworx Phones - Models: 9224
1 x XO Provided Cisco IAD Gateway
1 x Cisco Business Class Wireless Router
1 x Netgear Prosafe 16 Port 10/100 Switch
4 x Computers
1 x Server
VPN Incoming: 1 x Cisco Quick VPN from 2nd Orange County Location | 1 x Cisco Quick VPN from Phoenix, AZ Location | Note: Phoenix will soon need 2 VPN connections straight to the Orange County Server.

Orange County 2nd Location: (Time Warner Cable)
3 UP | 3 Down | Fiber Optic | Dedicated
1 x Computer
1 x Allworx Phone - Model: 9224
1 x System sits behind a SonicWall


3rd Location In Phoenix, AZ: (Cox Cable)
10 Up | 2 Down | 2 IP Address | Cable Internet
No Allworx Server
2 x Allworx Phones - Models: 9224
1 x Netgear 8 Port Switch
1 x Netgear ProSafe VPN Firewall
1 x Motorola Cable Modem
1 x Cisco Business Router

[OSM]

I've been dealing with an issue for 2 years that no one can seem to fix and no one can seem to answer. So here is my setup and here is my problem:

PROBLEM:
At the 2 satellite locations I am having 'intermittent' one-way audio that keeps happening. The customer can NOT here us but we can hear them perfectly clear. They get extreme jitter. In the main office though everything is fine - no issues. With all the research I have done and other pros - this is not a bandwidth issue and it happens even without the VPN's connected as well. If it was then audio would be bad both ways.

Also> the 1 satellite office is in a different State and the two satellite offices use 2 different cable companies so I don't believe its coincidence that the same EXACT issue is happening from 2 different providers.

Also> Just to rule out my inside network I replaced the IAD, the Router, & the Allworx Server. At the Phoenix location I have even bypassed the router and still the same issue. I've been dealing with XO's crappy customer service for 2 years and I'm just sick with all the costs involved. Its crazy - saw the other forum from 2011 but it seemed to revolve around the VPN.... Anyone? Anyone out there that can please help!!!???


SETUP
Main Office - Orange County, CA: (XO Communications on AT&T Lines)
T1 Line
1 x Allworx Server w/ Newest Release 7.5 - Model: 6X
3 x Allworx Phones - Models: 9224
1 x XO Provided Cisco IAD Gateway
1 x Cisco Business Class Wireless Router
1 x Netgear Prosafe 16 Port 10/100 Switch
4 x Computers
1 x Server
VPN Incoming: 1 x Cisco Quick VPN from 2nd Orange County Location | 1 x Cisco Quick VPN from Phoenix, AZ Location | Note: Phoenix will soon need 2 VPN connections straight to the Orange County Server.

Orange County 2nd Location: (Time Warner Cable)
3 UP | 3 Down | Fiber Optic | Dedicated
1 x Computer
1 x Allworx Phone - Model: 9224
1 x System sits behind a SonicWall


3rd Location In Phoenix, AZ: (Cox Cable)
10 Up | 2 Down | 2 IP Address | Cable Internet
No Allworx Server
2 x Allworx Phones - Models: 9224
1 x Netgear 8 Port Switch
1 x Netgear ProSafe VPN Firewall
1 x Motorola Cable Modem
1 x Cisco Business Router

[primalchrome]

- Are your remote phones communicating with the LAN or WAN interface on the Allworx?
- Do you have QOS enabled at each office for both internet traffic as well as traffic over the VPN?
- Are you showing any dropped packets, dropped tunnels, or significant latency between sites either directly or through the VPN?
- Do you have a sniff log of when calls work properly and another when they are losing audio or you have significant jitter?