ZyXEL Communications IP PBX X6004 User Manual
Page 167
Chapter 6 Server
X6004 User’s Guide
167
2
Peer-to-peer calls can be made between devices on the WAN if neither device
belongs to a subnet listed in the localnet table.
3
However, peer-to-peer calls cannot be made between devices if one of them
belongs to a subnet listed in the localnet table and the other does not.
Furthermore, the devices making a peer-to-peer connection:
• Must have a common codec they can use between them.
• Must use SIPInfo for DTMF.
• Must not be using NAT.
If they cannot meet these conditions, the peer-to-peer connection will fail and the
call will be routed through the X6004 instead.
For more information on adding different subnets to the localnet table, see
.