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What is COLP/COLR?

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  • #36899 Reply

    Hi all,

    Plz kindly tell me to clarify, what is COLP and COLR?

    How to use them and what different between COLP/COLR and CLIP/CLIR?

    COLP=Connected Line id Presentation
    COLR=Connected Line id Restriction


    #36900 Reply
    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.

    #36901 Reply


    #36902 Reply
    wallis dudhnath

    Line Identity Supplementary Services.

    – Calling line identification presentation (CLIP)
    – Calling line identification restriction (CLIR)
    – Connected line identification presentation (COLP)
    – Connected line identification restriction (COLR)

    Based on ISDN: I.420, I.421 and Q.931 (signalling).

    CLIP/CLIR is to do with Number Presentation.

    VBR/ Wallis Dudhnath

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Reply To: What is COLP/COLR?
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