Abstract: Disclosed herein is a method of executing the RAS stage up to the set-up stage in a H.323 system. The H. 323 system comprises one or more third party gatekeepers and one or more end points. A transparent back-to-back proxy gatekeeper is introduced between a third party gatekeeper and end-points. Two sets of ports are created on the transparent back-to-back proxy gatekeeper. One set of ports represent themselves as end-points to the third party gatekeeper and the other set of ports represent themselves as known ports of the third party gatekeeper to the end point. A H.323 RAS request is intercepted transparently from an end-point to a third party gatekeeper. The H.323 RAS request is addressed to a well-known port number on the third party gatekeeper. The information of the H.323 RAS registration request is stored in a local persistent copy within the back-to-back proxy gatekeeper. The H.323 RAS registration request is passed to the well-known port number on the third party gatekeeper.

Abstract: Disclosed herein is a method of executing the RAS stage up to the set-up stage in a H.323 system. The H. 323 system comprises one or more third party gatekeepers and one or more end points. A transparent back-to-back proxy gatekeeper is introduced between a third party gatekeeper and end-points. Two sets of ports are created on the transparent back-to-back proxy gatekeeper. One set of ports represent themselves as end-points to the third party gatekeeper and the other set of ports represent themselves as known ports of the third party gatekeeper to the end point. A H.323 RAS request is intercepted transparently from an end-point to a third party gatekeeper. The H.323 RAS request is addressed to a well-known port number on the third party gatekeeper. The information of the H.323 RAS registration request is stored in a local persistent copy within the back-to-back proxy gatekeeper. The H.323 RAS registration request is passed to the well-known port number on the third party gatekeeper.