CA2255971A1 - System and method for bypassing data from egress facilities - Google Patents

System and method for bypassing data from egress facilities Download PDF

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Publication number
CA2255971A1
CA2255971A1 CA002255971A CA2255971A CA2255971A1 CA 2255971 A1 CA2255971 A1 CA 2255971A1 CA 002255971 A CA002255971 A CA 002255971A CA 2255971 A CA2255971 A CA 2255971A CA 2255971 A1 CA2255971 A1 CA 2255971A1
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Canada
Prior art keywords
call
protocol
format
network
data
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Granted
Application number
CA002255971A
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French (fr)
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CA2255971C (en
Inventor
Shawn M. Lewis
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Level 3 Communications LLC
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Level 3 Communications LLC
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Publication of CA2255971A1 publication Critical patent/CA2255971A1/en
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Publication of CA2255971C publication Critical patent/CA2255971C/en
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/102—Gateways
    • H04L65/1033—Signalling gateways
    • H04L65/104—Signalling gateways in the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2854—Wide area networks, e.g. public data networks
    • H04L12/2856—Access arrangements, e.g. Internet access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2854—Wide area networks, e.g. public data networks
    • H04L12/2856—Access arrangements, e.g. Internet access
    • H04L12/2869—Operational details of access network equipments
    • H04L12/287—Remote access server, e.g. BRAS
    • H04L12/2876—Handling of subscriber policies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • H04Q3/0025—Provisions for signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • H04Q3/0029—Provisions for intelligent networking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • H04Q3/0029—Provisions for intelligent networking
    • H04Q3/0045—Provisions for intelligent networking involving hybrid, i.e. a mixture of public and private, or multi-vendor systems

Abstract

An open architecture platform bypasses data from the facilities of a telecommunications carrier, e.g. an incumbent local exchange carrier, by distinguishing between voice and data traffic, and handling voice and data traffic separately. An SS7 gateway receives and transmits SS7 signaling messages with the platform. When signaling for a call arrives, the SS7 gateway informs a control server on the platform. The control server manages the platform resources, including the SS7 gateway, tandem network access servers (NASs) and modem NASs. A tandem NAS receives the call over bearer channels. The control server determines whether the incoming call is voice traffic or data traffic, by the dialed number, and instructs the tandem NAS how to handle the call. Voiced traffic is transmitted to a switch for transmission from the platform. Data traffic is terminated at a modem NAS, where it is converted into a form suitable for a data network, such as a private data network or an Internet services provider (ISP). The converted data is sent by routers to the data network. The data network need not convert the data, as the function has already been provided by the platform. In lieu of a conversion, the modems can create a tunnel (a virtual private network) between a remote server and the data network.

Claims (59)

1. A system for bypassing the egress facilities of a telecommunications system, the system comprising:
(i) a gateway for communicating with a telecommunications carrier by receiving and transmitting signaling messages;
(ii) a network access server for terminating data calls and for termination and reorigination processing of said data calls; and (iii) a control server for communicating with said gateway, for distinguishing between voice calls and said data calls received from said telecommunications carrier, and for sending said data calls to said network access server.
2. The system according to claim 1, wherein said signaling messages are SS7 signaling messages, and wherein said gateway is an SS7 gateway device.
3. The system according to claim 1, wherein said gateway communicates with a switch facility in said telecommunications carrier via said signaling messages.
4. The system according to claim 3, wherein said switch facility is one of:
a class 3/4 access tandem switch; and a class 5 end office switch.
5. The system according to claim 1, wherein said gateway is a first application program running on a host computer, said control server being a second application program running on said host computer or on a second host computer, and said first application program and said second application program intercommunicate.
6. The system according to claim 1, wherein said control server comprises a communications portion for communicating with said gateway.
7. The system according to claim 6, wherein said communications portion of said control server and said gateway communicate via one of:

X.25 protocol format;

transmission control program, Internet protocol (TCP/IP) packet format;
and user datagram protocol, Internet protocol (UDP/IP) packet format.
8. The system according to claim 1, wherein said control server comprises a communications portion for communicating with a communications portion of said network access server.
9. The system according to claim 8, wherein said communications portion of said control server and said communications portion of said network access server communicate via a network access server (NAS) messaging interface (NMI) protocol.
10. The system according to claim 8, wherein said data calls have a digitized data format, said digitized format contains one of: a cell, a packet, and a frame.
11. The system according to claim 1, wherein said network access server extends a first network to a second network by establishing a protocol tunnel for said data calls.
12. The system according to claim 11, wherein said first network is a virtual private network and said second network is a data network.
13. The system according to claim 12, wherein said tunnel is established using a point-to-point tunneling protocol (PPTP).
14. The system according to claim 1, wherein said network access server converts said data calls from a first digitized format into a second digitized format for delivery of said data calls to a destination data network.
15. The system according to claim 14, wherein said network access server comprises a first device for terminating said data calls on at least one modem.
16. The system according to claim 11, wherein said first device comprises a modem network access server bay.
17. The system according to claim 14, wherein said first digitized format comprises one of:
a serial line interface protocol (SLIP) protocol format; and a point-to-point (PPP) protocol format.
18. The system according to claim 14, wherein said second digitized format comprises one of:
a transmission control program, Internet protocol (TCP/IP) packet format;
a user datagram protocol, Internet protocol (UDP/IP) packet format;
an asynchronous transfer mode (ATM) cell packet format;
a point-to-point tunneling protocol (PPTP) protocol format;
a NETBIOS extended user interface (NETBEUI) protocol format;

an AppleTalk protocol format;
a routing table protocol (RTP) Banyan VINES format;
A DECNet format;
a Netware Internet packet exchange (IPX) protocol format; and an Internet control message protocol (ICMP) protocol format.
19. The system according to claim 1, wherein said network access server comprises a second device which can be used to time division multiplex switch said data calls to another network access server.
20. The system according to claim 19, wherein said second device comprises a tandem network access server bay.
21. The system according to claim 1, wherein said system further comprises a database for distinguishing between said voice calls and said data calls.
22. The system according to claim 21, wherein said database includes a table comprising called party numbers and said terminating points corresponding to said called party numbers.
23. The system according to claim 22, wherein said control server determines that if said called party number corresponds to a data modem, then said call is one of said data calls.
24. The system according to claim 1, further comprising:
a voice switch for switching said voice calls and for transmitting said voice calls from the system.
25. The system according to claim 1, wherein the system is an open architecture platform.
26. The system according to claim 25, wherein said open architecture platform is integrated into facilities of: an incumbent local exchange carrier (ILEC), an interexchange carrier (IXC), a competitive local exchange carrier (CLEC), and an enhanced services provider.
27. The system according to claim 1, wherein any combination of said gateway, said control server and said network access server are collocated.
28. The system according to claim 1, wherein any combination of said gateway, said control server and said network access server are located geographically apart from one another.
29. The system according to claim 24, wherein any combination of said gateway, said control server, said network access server and said voice switch are collocated.
30. The system according to claim 24, wherein any combination of said gateway, said control server, said network access server and said voice switch are located geographically apart from one another.
31. A system for bypassing the egress facilities of a telecommunications system, the system comprising:
(a) a voice switch capable of transmitting voice calls to a called party; and (b) an open architecture switch capable of receiving data calls and said voice calls from a telecommunications carrier, said open architecture switch including (i) a modem network access server capable of terminating said data calls to a modem;
(ii) a tandem network access server receiving said data calls and said voice calls; and (iii) a gateway including an SS7 gateway capable of managing signaling information for said open architecture switch, and a control server capable of controlling said modem network access server and said tandem network access server, wherein said control server is capable of distinguishing between said data calls and said voice calls, transmitting said voice calls to said voice switch, and transmitting said data calls to said modem network access server.
32. A system for bypassing the egress facilities of a telecommunications carrier, comprising:
means for receiving and distinguishing between data calls and voice calls;
and means for converting said data calls into a form used by a data network.
33. The system according to claim 32, wherein:
said converting means comprises at least one network access server for terminating said incoming data calls to modems, wherein said modems convert said incoming data calls from a first format to a second format; and said receiving and distinguishing means comprises a gateway for handling signaling information, and a control server for controlling said gateway and said at least one network access server.
34. The system according to claim 32, wherein said converting means comprises:
a network access server for terminating said incoming data calls to modems, wherein said modems convert said incoming data calls from a first format to a second format.
35. The system according to claim 32, wherein said system further comprises:
a voice switch for switching said voice calls.
36. A method for bypassing data from egress facilities of a telecommunications carrier, the method comprising the steps of:
establishing a call with an open architecture telecommunications system;
determining whether said call is a voice call or a data call; and terminating said call onto a network access server for termination processing, if said call is a data call.
37. The method according to claim 36, wherein said step of establishing a call with said telecommunications system comprises:

receiving signaling information to set up a call coming into said open architecture telecommunications system;
informing a control server that a call has arrived on said open architecture telecommunications system; and receiving said call at said open architecture telecommunications system.
38. The method according to claim 37, wherein said step of receiving signaling information comprises receiving signaling information at a gateway.
39. The method according to claim 38, wherein signaling system 7 (SS7) signaling information is received at said gateway.
40. The method according to claim 38, wherein said gateway is an application program running on a host computer.
41. The method according to claim 36, wherein said determining step is performed by a control server.
42. The method according to claim 41, wherein said control server is an application program running on a host computer.
43. The method according to claim 36, wherein said determining step comprises:
using a telephone number of a called party to determine whether said call is a voice call or a data call.
44. The method according to claim 43, wherein said telephone number is a number used to access one of:
at least one network device of an Internet Services Provider (ISP);
at least one network device of a competitive local exchange (CLEC) carrier;
at least one network device of an incumbent local exchange (ILEC) carrier;
at least one network device of an enhanced services provider (ESP);

at least one Intelligent Peripheral (IP) network device; and at least one customer premises equipment (CPE).
45. The method according to claim 43, wherein said using step comprises:
looking up said telephone number in a database.
46. The method according to claim 36, wherein said terminating step comprises:
converting said call from a first protocol to a second protocol.
47. The method according to claim 46, wherein said first protocol comprises one of:
a serial line interface protocol (SLIP) protocol format; and a point-to-point (PPP) protocol format.
48. The method according to claim 46, wherein said second protocol comprises one of:
a transmission control program, Internet protocol (TCP/IP) packet format;
a user datagram protocol, Internet protocol (UDP/IP) packet format;
an asynchronous transfer mode (ATM) cell packet format;
a serial line interface protocol (SLIP) protocol format;
a point-to-point (PPP) protocol format;
a NETBIOS extended user interface (NETBEUI) protocol format;
an AppleTalk protocol format;
a routing table protocol (RTP) Banyan VINES format;
a DECNet format;
a Netware Internet packet exchange (IPX) protocol format; and an Internet control message protocol (ICMP) protocol format.
49. The method according to claim 36, wherein said terminating step comprises:
providing a protocol tunnel from a first network to a second network.
50. The method according to claim 49, comprising:
using a virtual private network protocol to extend said first network to said second network.
51. The method according to claim 50, wherein said virtual private network protocol comprises a point-to-point tunneling (PPTP) protocol.
52. The method according to claim 50, wherein said first network is a virtual private network, and wherein said second network is a data network.
53. The method according to claim 36, wherein said call is terminated onto at least one modem in said network access server.
54. The method according to claim 53, wherein said call and at least one other call terminated at said network access server are connected in a time division multiplexed switching connection to said at least one modem.
55. The method according to claim 36, wherein said terminating step comprises:
terminating said call to a voice switch, if said call is a voice call.
56. A method for bypassing data from the facilities of a telecommunications carrier comprising the steps of:

(a) receiving signaling information for transmitting a call;
(b) converting said signaling information into a format used by an open architecture platform;
(c) receiving said call on said platform;
(d) determining whether said call is a voice call or a data call;
(e) controlling at least one network access server;
(f) terminating said call in said at least one network access server, if said call is a data call; and (g) transmitting said call to a voice switch, if said call is a voice call.
57. The method according to claim 56, wherein step (d) comprises:
using a telephone number of a called party to determine whether said call is a voice call or a data call.
58. The method according to claim 56, wherein step (f) comprises one of:
(i) terminating said call to a modem; and (ii) establishing a tunnel to a virtual private data network.
59. The method according to claim 58, wherein step (ii) comprises:
uses a point-to-point tunneling protocol (PPTP) to extend a virtual private network to a second network.
CA2255971A 1998-11-20 1998-12-14 System and method for bypassing data from egress facilities Expired - Lifetime CA2255971C (en)

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Application Number Priority Date Filing Date Title
US09/196,756 US6442169B1 (en) 1998-11-20 1998-11-20 System and method for bypassing data from egress facilities
US09/196,756 1998-11-20

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CA2255971A1 true CA2255971A1 (en) 2000-05-20
CA2255971C CA2255971C (en) 2011-02-01

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US (5) US6442169B1 (en)
AU (1) AU1917600A (en)
CA (1) CA2255971C (en)
WO (1) WO2000031924A1 (en)

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US6442169B1 (en) 2002-08-27
US8953585B2 (en) 2015-02-10
CA2255971C (en) 2011-02-01
US20070201515A1 (en) 2007-08-30
US7720081B2 (en) 2010-05-18
US20100296508A1 (en) 2010-11-25
AU1917600A (en) 2000-06-13
US20130294439A1 (en) 2013-11-07
US8416769B2 (en) 2013-04-09
WO2000031924A1 (en) 2000-06-02
US20030198216A1 (en) 2003-10-23
US7200150B2 (en) 2007-04-03

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