CALL HOLD / TERMINAL PORTABILITY IN H.323/ISUP-BICC-SIP NETWORKS

摘要

The invention relates to an interworking between two protocols (H.323 or PSTN and SIP) in a network with a first user (T1),corresponding to the first protocol (SIP) and a second user (T2) corresponding to the second protocol (H.323 or PSTN), achieved whereby a third protocol (BICC) serves as interface between the Media Gateway Controllers (MGC) involved. A connection between the both users (T1, T2) is achieved by means of at least one user channel (12) in each of the transmission and receive directions. Performance features (16), the operation of which provide a resolution of the user channels (12), which, on initiation of the performance features (16), are provided with a command set directed at the second user (T2) by the first user (T1) with the aim of interrupting the user channel (12) coming from the second user (T2) with respect to the first user (T1).