Patent ID: 6075985
Filing Date: 2000-06-13
Classification: H04W

Abstract:
A method for establishing communication between a first user station in a public switched telephone network (PSTN), said first user station having a first station directory number (DN.sub.1), and a second user station served by a private branch exchange (PBX), said second user station having a second station directory number (DN.sub.2), comprising the steps of:(a) establishing a bidirectional communication link between a base station and said first user station;(b) establishing a bidirectional communication link between said PBX and said second user station;(c) establishing a bidirectional wireless communication link between a wireless trunk interface (WTI) and said base station using an air interface (AIF) protocol, based on an identification of said WTI;(d) establishing a trunk link between said WTI and said PBX; and(e) passing said DN.sub.2 over said wireless communication link within said AIF protocol; andwherein said step of passing said DN.sub.2 over said wireless communication link comprises:generating at said base station a forward message comprising said DN.sub.1 and a character string indicative of said DN.sub.2 ; andprefixing said character string to said DN.sub.1 in a plurality of message words of the ""Calling ID"" message of the alert with info control signal.