System and method for distributed call signaling in telephony-over-LAN networks
First Claim
Patent Images
1. A telecommunications system, comprising:
- a packet switched network;
a gateway configured to interface said packet switched network to a second network, said gateway configured to block call signal tones for call signaling received from said second network from being transmitted over said packet switched network; and
one or more telephony devices coupled to said packet switched network, said one or more telephony devices configured to play locally audio files corresponding to reproduced blocked call signal tones for call signaling for said call at said second network.
7 Assignments
0 Petitions
Accused Products
Abstract
A gateway (106) to an H.323 network configured to monitor and intercept in-band signaling from external networks. The gateway (106) further provides to the H.323 terminal (102) out-of-band signaling indicative of the nature of the in-band signaling received from the external network. If the signaling changes, the gateway (106) provides this information to the H.323 terminal (102). The gateway (106) thus prevents the need to cut through audio channels for ringback tones or busy signals.
-
Citations
20 Claims
-
1. A telecommunications system, comprising:
-
a packet switched network;
a gateway configured to interface said packet switched network to a second network, said gateway configured to block call signal tones for call signaling received from said second network from being transmitted over said packet switched network; and
one or more telephony devices coupled to said packet switched network, said one or more telephony devices configured to play locally audio files corresponding to reproduced blocked call signal tones for call signaling for said call at said second network. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A telecommunications system comprising:
-
a packet swithed network;
a gateway configured to interface said placket switched network to a second network, said gateway configured to block call signal tones, for call signaling received from said second network from being transmitted over said packet switched network; and
one or more telephony devices coupled to said packet switched network, said one or more telephony devices configured to play locally audio files corresponding to reproduced blocked call signal tones for call signaling for said call at said second network;
said one or more telephony devices configured to extract unknown call signal tones and store said unknown call signal tones as audio files before said unknown call signal tones are blocked by said gateway. - View Dependent Claims (7)
-
-
8. A telecommunications system comprising:
-
a packet switched network;
a gateway configured to interface said packet switched network for a second network, said gateway configured to block call signal tones for call signaling received from said second network from being transmitted over said packet switched network; and
one or more telephony devices coupled to said packs switched network, said one or more telephony devices configured to play locally audio files corresponding to reproduced blocked call signal tones for call signaling for said call at said second network;
said gateway configured to extract unknown call signal tones and store said unknown call signal tones as audio files. - View Dependent Claims (9)
-
-
10. A method for operating a telecommunications system including a gateway coupling a packet switched network having a plurality of telephony devices to a second network, comprising:
-
receiving a call signal tone at one of said plurality of telephony devices;
identifying said call signal tone;
blocking said call signal tone to said second network;
accessing an audio file to play a reproduction of said call signal tone locally. - View Dependent Claims (11, 12)
-
-
13. A method for operating a telecommunications system including a gateway coupling a packet switched network having a plurality of telephony devices to a second network, comprising:
-
receiving a call signal tone at one of said plurality of telephony devices;
identifying said call signal tone;
blocking said call signal tone to said second network;
accessing an audio file to play a reproduction of said call signal tone locally;
including said one of said plurality of telephony devices configured to extract as an audio file an unknown call signal tone. - View Dependent Claims (14)
-
-
15. A telecommunications device, comprising:
-
a controller including a pattern recognizer for recognizing patterns in call signal tones for a from a first network; and
a memory for storing as audio files patterns recognized by said controller, wherein said controller is configured to play said audio files comprising reproductions of said call signal tones at a second network when said call signal tones are blocked. - View Dependent Claims (16)
-
-
17. A gateway for a telecommunications system, comprising:
-
a first interface for interfacing to a first network;
a second interface for interfacing to a second network;
a controller including a call signal tone monitor for monitoring call signal tones received from said first network; and
a memory configured to store audio files of call signal tones for reproducing said call signal tones at said second network. - View Dependent Claims (18, 19, 20)
-
Specification