Polycom EX Guía Del Usuario

This command sets the PRI numbering plan. 

With isdn, the numbering plan is identified to the 
upstream switch as ISDN, and the number type, which 
is either national or international, is determined from the 
dialed phone number. If the dialed phone number starts 
with the international dialing prefix that is currently 
selected, the type is set to the international and the 
prefix is removed from the number before the number is 
sent to the upstream switch. Otherwise, the number is 
marked as national and passed to the upstream switch 
without modification.

unknown The default selection is unknown. With this option, the 

numbering plan and number type are sent to the 
upstream as unknown, and the dialed phone number is 
sent without notification. The default value, unknown, is 
preferred and should work in most cases. Unknown 
should work with all properly configured PBXs and with 
most telephone company switches. One notable 
exception in North America is an ATT 5ESS switch, 
which is provisioned with Accunet, or an ATT 4ESS 
switch. For these switches, set the numbering type to 
ISDN.

Displays the current setting.

prinumberingplan isdn 

System Info>Admin Setup>Video Network>IMUX>PRI network>

 

PRI Setup>Advanced PRI Setup

This screen is only accessible if you have a PRI network interface 
connected to your ViewStation FX or VS4000 system.