ISDN Line to use as CO Line

[angelo castro]

How to program my ISDN line to Trunk Line Button? By Default is CO Line but

Our company using ISDN line not PSTN Line...

[acampbell]

Angelo,

I dont understand what this question is about.

Is this CUCM, CME gateways WHAT ?

Regards

Alex

[angelo castro]

Attention to all Cisco Support Community

how to Program Line Button(keys)., Using the ISDN line not the PSTN line.

PSTN is analog and ISDN is digital.

I hope i can dial ISDN line from line (Button)keys. not just pressing "9" for

external calls.

@Alex ok the UC540 have 2 Trunk option to use....

Analog trunk ports(FXO Ports) and ISDN PRI Trunk

how to program the line key(green button) To call external using ISDN PRI Trunk