Patent ID: 7158615
Filing Date: 2007-01-02
Classification: H04M,H04Q

Abstract:
1. A method for determining whether a call forward busy service is enabled on a telephone line, the method comprising: placing a first test call across a network to the telephone line; receiving first signaling data through the network in response to the first test call; evaluating the first signaling data to determine whether the first test call is inspiring a ringing condition; placing a second test call across the network conditioned on whether the first signaling data indicates that the first test call is determined to be inspiring a ringing condition, the second test call being placed while the first test call remains inspiring ringing; receiving second signaling data through the network in response to the second test call; evaluating the second signaling data to determine whether the second test call is inspiring a ringing condition; concluding whether a call forward busy service is enabled on the telephone line based on whether the second test call is determined to be inspiring a ringing condition.