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What does TRUNK OFFER mean?

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  • #37529 Reply
    AHMAD
    Guest

    I’m working in EWSD system. Can anyone help me in explaining, what does Trunk Offer(TRO) mean?
    Actually I came across this, while constructing a Protocol Table (ie PROTTAB). Seems it has got some link with ISUP.
    Thanx in Advance.

    #37530 Reply
    Wallis Dudhnath
    Guest

    A “trunk” is a single transmission channel between two communication entities; each enity being either the switching center or another node.

    The “trunk” allows other circuits to be shared using well known multiplexing techniques. In the UK a “trunk call” means a call between different
    towns and cities. The term is the left overs from the analog era. Compare this with “director” or “non-director” calls.

    For your case a “trunk” will be a ISUP TX circuit that will be controlled by Common Channel Signalling that is known as C7 or ss7.

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