FULL PBX TELEPHONY FEATURE PRESERVATION ACROSS A VOICE OVER PACKET NETWORK

• US 20060215643A1
• Filed: 06/09/2006
• Published: 09/28/2006
• Est. Priority Date: 06/28/2000
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Tamsil, Yosef Rizal
• Granted Patent: US 7,830,865 B2
• Time in Patent Office: Days
• US Class Current: 370/352
• CPC Class Codes: H04L 12/6418 Hybrid transport

Abstract

A method for providing supplementary services in a packet voice network. The method includes the steps of receiving a list of information elements from a sending station and then inserting the list into a call control message. The message is inserted in such a manner as to ensure that any supplementary services information included in the information elements is preserved. In addition locally significant messages are included in a globally significant message so any supplementary services information in the locally significant messages is preserved. After the supplementary services information is preserved, the messages are sent to a receiving station. A network device operable to provide this functionality is also discussed.

Claims

1. A network device operable to provide supplementary services information, comprising:

a first communications devices to receive a list of information elements from a sending station in a private branch exchange network;

a tandem node to;

insert the list into a call control message such that any supplementary services information included in the information elements is preserved, wherein supplementary services are services that rely upon the presence of another service to operate; and

map a locally significant message into a globally significant message in a private branch exchange network wherein any supplementary services information in the locally significant messages is preserved, wherein a locally significant message is a message that is otherwise not transmitted to other stations on a network; and

a second communications device to send the call control message and the globally significant message to a receiving station in the private branch exchange network.

2. The device of claim 1 wherein the packet voice network further comprises one of the group comprising:

Voice over FR, Voice over IP and Voice over ATM.

3. The device of claim 1, wherein the first and second communication devices further comprise routers.

4. The device of claim 1, wherein the first and second communication devices are part of one router.

5. A method of providing supplementary services information, comprising:

communicating with a sending node;

communicating with a receiving node; and

mapping a locally significant message to a globally significant message from the first means to the second means such that private branch exchange services are transferred, wherein the locally significant message is a message not otherwise transmitted past the first means.