Hi Guys
We have IPO Installed with different Extension Numbering Plan and and its connected to Remote PABX (Cisco) Over H323 Trunk.
Now The Cisco Have Ext numbering from 1000,1100,1200,1300,1400,1500,1600,1700,1800,1900,2000,
and In Avaya we Config same numbering but for sure unique Extension...