command to have caller-id name for incoming calls

I had a H323 gateway and cisoco Callmanager. The caller-id name wasn't working on incoming calls until I added this command on the serial interface for the PRI "isdn supp-service name calling".

Example:
interface Serial0/0/1:23
no ip address
encapsulation hdlc
isdn switch-type primary-ni
isdn incoming-voice voice
isdn supp-service name calling
no cdp enable