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Reply To: What is COLP/COLR?

Hasan Pehlivan

These are both colp and colr ISDN Services.
COLP: Calling party service.İt provides ISDN number of party to whom the caller ID is connected.

COLP is suplementary service.Network delivers the connected line identity to calling party on call acceptance regardless of terminal’s ability to handle the information.

COLR:Connected Party service.this service restricts disclosure of the connected party’s number to calling party.
COLR is also suplementary service.