Patent ID: 8139750
Filing Date: 2012-03-20
Classification: H04L,H04M,H04Q

Abstract:
1. A method of operating a call processing system in a communication network, the method comprising: receiving a call setup request for a call from a calling party in a calling network to a called party in the communication network; processing the call setup request to determine if the call requires an early media service that is selected by the called party prior to the call and provided by a service network to the calling party; forwarding the call setup request to the service network if the early media service is required, wherein the service network returns a SS7 address complete message (ACM) having a backward call indicator (BCI) field that indicates a first parameter in response to the call setup request; and generating an early SS7 ACM having a BCI field that indicates a second parameter having a value different than a value of the first parameter in the call processing system if the early media service is required, and transmitting the early SS7 ACM to the calling network prior to receiving the SS7 ACM, wherein the calling network generates and transmits a call setup instruction to the calling party in response to the early SS7 ACM.