We have 2 offices connected to our home office via Watchguard VPN. Remote Location 1 & 2 can both call the main office and everything is fine. Remote Location 1 can call the office, the home office can conference in Remote Location 2 and everyone hears eachother. But if Remote Location 1 calls Remote Location 2 directly, or vice-versa, you can see the other location pick up the phone but there is no audio.
Avaya IP Office 406 2.1(27)
4606 IP Phones
Avaya IP Office 406 2.1(27)
4606 IP Phones