Signaling system and method for enabling PBX-PBX feature transparency across a switched public network
First Claim
1. A system for transporting private branch exchange features transparently across a switched public network, comprising:
- an originating private branch exchange including,a call processing section for generating call/feature control data, the call/feature control data including one or more proprietary ISDN protocol elements and one or more standard ISDN protocol elements, anda first interface for coupling said originating private branch exchange to the switched public network, said first interface receiving the call/feature control data from said call processing section, packing the proprietary ISDN protocol elements into a transparent data transport scheme, and transmitting the proprietary ISDN protocol elements packed in the transparent data transport scheme and the standard ISDN signaling protocol elements over the switched public network; and
a destination private branch exchange including a second interface for coupling said destination private branch exchange to the switched public network, said second interface receiving the proprietary ISDN protocol elements in the transparent data transport scheme and the standard ISDN protocol elements, and unpacking the proprietary ISDN protocol elements from the transparent data transport scheme, whereby said transparent data transport scheme utilizes a user-user signaling data service packet.
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0 Petitions
Accused Products
Abstract
A method and system for supporting private branch exchange features over a public switched network is provided. The proprietary private branch exchange call and feature control information is separated into standard ISDN public network protocol elements and proprietary ISDN protocol elements. The interface between the originating private branch exchange and the public switched network inserts the proprietary protocol elements into a UUS service data packet for transparently transmission to the destination private branch exchange. Thus, the proprietary private branch exchange feature control information can be recovered and utilized by the destination private branch exchange, thus permitting PBX-PBX feature transparency through a switched public ISDN network.
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Citations
8 Claims
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1. A system for transporting private branch exchange features transparently across a switched public network, comprising:
an originating private branch exchange including, a call processing section for generating call/feature control data, the call/feature control data including one or more proprietary ISDN protocol elements and one or more standard ISDN protocol elements, and a first interface for coupling said originating private branch exchange to the switched public network, said first interface receiving the call/feature control data from said call processing section, packing the proprietary ISDN protocol elements into a transparent data transport scheme, and transmitting the proprietary ISDN protocol elements packed in the transparent data transport scheme and the standard ISDN signaling protocol elements over the switched public network; and a destination private branch exchange including a second interface for coupling said destination private branch exchange to the switched public network, said second interface receiving the proprietary ISDN protocol elements in the transparent data transport scheme and the standard ISDN protocol elements, and unpacking the proprietary ISDN protocol elements from the transparent data transport scheme, whereby said transparent data transport scheme utilizes a user-user signaling data service packet. - View Dependent Claims (2, 3, 4, 5)
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6. A method for transporting private branch exchange features transparently across a switched public network, comprising the steps of:
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initiating a call from an originating private branch exchange; generating call/feature control data, the call/feature control data including one or more standard ISDN protocol elements and one or more proprietary ISDN protocol elements; packing the proprietary ISDN protocol elements into a transparent data transport scheme; transmitting the proprietary ISDN protocol elements in the transparent data transport scheme and the standard ISDN protocol elements over a switched public network to a destination private branch exchange; and unpacking the proprietary ISDN protocol elements from the transparent data transport scheme, whereby said transparent data transport scheme utilizes a user-user signaling data service packet. - View Dependent Claims (7, 8)
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Specification