Overlap Signaling (Receiving)

There are two methods supported by the IMG 2020 to interwork Called Party Number digits. One method labeled Enbloc requires that all the Destination address information be included in the IAM,SETUP or INVITE. The other method is Overlap. The IMG 2020 supports Overlap Receiving where the destination address is contained in an IAM and SAM sequence of messages or a series of INVITES, each containing one or more destination address digits (ISDN = SETUP,INFO message sequence). The received digits are buffered until the configured minimum number of digits is received or other termination condition is met at which point the outgoing call is made with the destination address Enbloc.

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