Distributed integration of legacy PBX system with SIP networks
View Patent ↗A telephony communications network supporting translation of private signaling codes for transmission over a private and/or IP network. A digital telephone emits a private signaling code for accessing a particular PBX function. An adapter coupled to the digital telephone translates the private signaling code into a SIP invite, request, response, information, notification message, and/or instant message if the private signaling code is destined for the IP network. If the private signaling code is not destined for the IP network, the private signaling code is not translated and is transmitted over the private network. If the private signaling code is destined for the IP network, the private signaling code is translated into a SIP message and transmitted over the IP network to a SIP user agent. A PBX is also coupled to the adapter that receives the private signaling codes. The codes are transmitted to the PBX for rendering a function for the digital telephone. A SIP telephone aware of the private signaling codes may also access PBX functions by translating private signaling codes into/from SIP messages.
1. A telephony communications network comprising:
a communications interface receiving an application layer control protocol message transmitted directly by a first telephony unit;
an adapter coupled directly to the communications interface, the adapter translating the application layer control protocol message into a telephony signaling code; and
a second telephony unit coupled directly to the adapter for receiving the telephony signaling code wherein the adapter further comprises: a network interface for receiving the application control protocol message transmitted by the first telephony unit, a processor connected to the network interface for translating the application control protocol message into the telephony signaling code and a signaling interface connected to the processor for forwarding the telephony signaling code to the second telephony unit.
2. The network of claim 1 , wherein the adapter unit allows the first telephony unit access to private branch exchange functionality associated with the application layer control protocol message.
3. The network of claim 1 further comprising a server for routing the application layer control protocol message transmitted by the first telephony unit.
4. The network of claim 3 , wherein the server allows the first telephony unit access to SIP server functionality associated with the application layer control protocol message.
5. The network of claim 3 , wherein the server provides a third party service for the first telephony unit.
6. The network of claim 3 , wherein the server provides a third party service for the second telephony unit.
7. The network of claim 1 , wherein the application layer control protocol message is a Session Initiation Protocol (SIP) message.
8. The network of claim 1 , wherein the application layer control protocol message is a Real-Time Transport Protocol (RTP) for media exchange.
9. The network of claim 1 , wherein the application layer control protocol message is a Session Initiation Protocol (SIP) message and a Real-Time Transport Protocol (RTP) for media exchange.
10. The network of claim 1 , wherein the telephony signaling code is a private digital signaling and voice (PDSV) to exchange signaling and voice.
11. The network of claim 1 , wherein the first telephony unit is a SIP user agent.
12. The network of claim 1 , wherein the second telephony unit is a digital telephone.
13. The network of claim 1 , wherein the adapter is a Session Initiation Protocol (SIP) Adapter Module.
14. A method for communicating over a telephony communications network, the method comprising:
receiving at a communications interface an application layer control protocol message transmitted directly by a first telephony unit;
translating the application layer control protocol message into a telephony signaling code at an adapter coupled directly to the communications interface;
transmitting the telephony signaling code to a second telephony unit coupled directly to the adapter; and
receiving the telephony signaling code at the second telephony unit wherein the adapter further comprises: a network interface for receiving the application control protocol message transmitted by the first telephony unit, a processor connected to the network interface for translating the application control protocol message into the telephony signaling code and a signaling interface connected to the processor for forwarding the telephony signaling code to the second telephony unit.
15. The method of claim 14 , further comprising accessing private branch exchange functionality associated with the application layer protocol message.
16. The method of claim 14 further comprising routing the application layer control protocol message transmitted by the first telephony unit.
17. A telephony communications network comprising:
a communications interface receiving an application layer control protocol message transmitted directly by a first telephony unit;
an adapter coupled directly to the communications interface, the adapter translating the application layer control protocol message into a telephony signaling code;
a second telephony unit coupled directly to the adapter for receiving the telephony signaling code; and
a server for routing the application layer control protocol message transmitted by the first telephony unit wherein the server provides a third party service for the first telephony unit.
18. A telephony communications network comprising:
a communications interface receiving an application layer control protocol message transmitted directly by a first telephony unit;
an adapter coupled directly to the communications interface, the adapter translating the application layer control protocol message into a telephony signaling code;
a second telephony unit coupled directly to the adapter for receiving the telephony signaling code; and
a server for routing the application layer control protocol message transmitted by the first telephony unit wherein the server provides a third party service for the second telephony unit.