Abstract: Methods and systems for detecting IP route failure using a request-reply protocol, such as address resolution protocol (ARP), and for dynamically re-routing VoIP sessions in a VoIP device in response to failure of an IP route are disclosed. A plurality of IP routes are established between a first VoIP device and a second VoIP device. VoIP sessions are assigned to the IP routes. ARP is used to detect a failure of an IP route. In response to detecting a failure of at least one IP route, VoIP sessions are rerouted from the failed IP route to an alternate IP route.

Abstract: A programmable call processing system (52) provides a standard call processing process (80) performing call processing according to industry standard call models, at least one database (84, 86) storing call processing data accessible by the set of standard call processing process (80), and at least one customized call logic program (92) for implementing extended subscriber features on the telecommunications switching system (10, 30). Further, an application program interface (56, 94) provides access by the at least one customized call logic program (92) to the at least one call processing database (84, 86) and further interrupting the standard call processing process (80) to execute the customized call logic program (92).

Abstract: A programmable call processing system (70) provides a standard call processing process (82) performing call processing according to industry standard call models, at least one database (84, 86) storing call processing data accessible by a set of call processing state machine process (80), and at least one customized call logic program (92) for implementing extended subscriber features on a telecommunications switching system. Further, an application program interface (94) provides access by the at least one customized call logic program (92) to the at least one call processing database (84, 86) and further interrupting the standard call processing process (82) to execute the customized call logic program (92).