Patent ID: 8374330

Claim:
A method of call control including comprising: in a first network, configuring and using at least one digital data processor and associated memory for detecting calls directed to a destination in the first network; redirecting a plurality of the calls to a destination in a second network; in a first phase, for each call of a first set of the plurality of calls redirected to the second network, recording a time delay before the call is answered in the second network; and setting a delay period to a value less than a maximum value of the time delays recorded in the first phase; and in a second phase, for a second set of the plurality of calls, comprising calls redirected to the second network subsequent to the calls of the first set, when a call of the second set redirected to the second network is not answered in the second network within the delay period, redirecting in the first network the call to an alternative destination associated with the first network.