Method of and system for extending internet telephony over virtual private network direct access lines
First Claim
Patent Images
1. A virtual private network, which comprises:
- an internet protocol network;
an enterprise gateway operably connected to said internet protocol network;
a direct access line operably connected to said gateway; and
a switch of a public switched telephone network operably connected to said direct access line.
7 Assignments
0 Petitions
Accused Products
Abstract
A virtual private network includes an internet protocol (IP) network and a public switched telephone network (PSTN). An enterprise gateway is operably connected to the IP network. The enterprise gateway is operably connected to a switch of the PSTN through a direct access line (DAL). The set-up signaling for virtual private network calls and the calls themselves are transported across the internet protocol network and the public switched telephone network through the direct access line.
-
Citations
17 Claims
-
1. A virtual private network, which comprises:
-
an internet protocol network;
an enterprise gateway operably connected to said internet protocol network;
a direct access line operably connected to said gateway; and
a switch of a public switched telephone network operably connected to said direct access line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
a signaling gateway; and
a media gateway.
-
-
3. The virtual private network as claimed in claim 2, wherein said signaling gateway comprises means for converting internet protocol call set-up messages to telephone call set-up messages.
-
4. The virtual private network as claimed in claim 2, wherein said signaling gateway comprises means for converting internet session initiation protocol messages to telephone call setup messages.
-
5. The virtual private network as claimed in claim 1, comprising:
-
a second enterprise gateway operably connected to said internet protocol network; and
,an originating public branch exchange operably connected to said second gateway.
-
-
6. The virtual private network as claimed in claim 5, wherein said second gateway comprises:
-
a signaling gateway; and
a media gateway.
-
-
7. The virtual private network as claimed in claim 6, wherein said signaling gateway of said second gateway comprises means for converting telephone call set-up messages to internet protocol call set-up messages.
-
8. The virtual private network as claimed in claim 6, wherein said signaling gateway of said second gateway comprises means for converting telephone call set-up messages to internet session initiation protocol messages.
-
9. The virtual private network as claimed in claim 1, comprising:
a terminating private branch exchange operably connected to said public switched telephone network.
-
10. A method of providing virtual private network services, which comprises the steps of:
-
transporting a called party number to an enterprise gateway through an internet protocol network; and
,transporting said called party number from said gateway to a switch of a public switched telephone network switch through a direct access line. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
routing a call through said public switched telephone network based upon said called party number, said OSID, and said OTG.
-
-
14. The method as claimed in claim 10, wherein said step of transporting said called party number to said gateway comprises the steps of:
-
receiving said called party number in a telephony signaling protocol at a second enterprise gateway; and
translating said called party number from said telephony signaling protocol to an internet protocol for transport over said internet protocol network.
-
-
15. The method as claimed in claim 14, comprising the step of:
generating a URL with said called party number at said second gateway.
-
16. The method as claimed in claim 15, wherein said URL includes said called party number and a domain name corresponding to said gateway.
-
17. The method as claimed in claim 10, wherein said step of transporting said called party number to said gateway through said internet protocol network comprises the step of:
sending a Session Initiation Protocol INVITE message including said called party number to said gateway.
Specification