Polycom EX Guía Del Usuario

The following commands are specific to the ISDN BRI network 
interface.

isdnareacode <set|get> ["area code"]
isdnareacode set ["area code"]
isdnareacode set
isdnareacode get

This command sets the ISDN area code or STD code associated 
with the area where the system is used. 

Sets the ISDN area code when followed by the area 
code parameter. If you want to erase the current 
setting, omit area code.

Displays the area code information.

area code Numeric value.

isdnareacode set 512

System Info>Admin Setup>Video Network>ISDN Network: ISDN 
VIdeo Numbers>Area Code

Note  This screen is only accessible if you have a Quad BRI 

network interface connected to your system.