GetCPEID() — Gets the CPE ID from an ADSI-capable telephone
Obtains the CPE ID and other information and displays it on the Asterisk console. This information is often needed in order to properly set up zapata.conf for on-hook operations with ADSI-capable telephones.
-1 on hangup
; use this extension to get the necessary information to set up ADSI ; telephones exten => 123,1,GetCPEID()