Abstract: System and method to send security status notifications within a SIP conference. A SIP conference server receives a from a SIP conference client a request for a SIP NOTIFY message, creates a SIP NOTIFY message including information about security status of a conference resource, and sends the SIP NOTIFY message to all SIP conference subscribers. Subscribers parse the NOTIFY message to find and save security status about individual links or the entire conference. The NOTIFY message may be sent in response to a SUBSCRIBE message or other client request. The security status may include a binary indicator and/or a security protocol.

Abstract: System and method to enable selective suppression of an audible indication in a SIP-based call, the method including: receiving, by a SIP conferencing server, a message from a caller to initiate a SIP-based call, wherein the message comprises a header section; searching the header section for a predetermined header; if the predetermined header is found, determining a field and a corresponding field value from the predetermined header; and storing the field value in a memory, wherein the stored field value is specific to the field and to the caller.

Abstract: System and method to send security status notifications within a SIP conference. A SIP conference server receives a from a SIP conference client a request for a SIP NOTIFY message, creates a SIP NOTIFY message including information about security status of a conference resource, and sends the SIP NOTIFY message to all SIP conference subscribers. Subscribers parse the NOTIFY message to find and save security status about individual links or the entire conference. The NOTIFY message may be sent in response to a SUBSCRIBE message or other client request. The security status may include a binary indicator and/or a security protocol.

Abstract: System and method to enable selective suppression of an audible indication in a SIP-based call, the method including: receiving, by a SIP conferencing server, a message from a caller to initiate a SIP-based call, wherein the message comprises a header section; searching the header section for a predetermined header; if the predetermined header is found, determining a field and a corresponding field value from the predetermined header; and storing the field value in a memory, wherein the stored field value is specific to the field and to the caller.

Abstract: The present invention allows a client on a private network to determine changes in a public address, which is provided by an address translation device and used for communications on a public network. The client will receive messages over the private network from the public network via the address translation device. In the message, a copy of the public address is placed in a portion of the message. When the address translation device modifies the message such that the client's private address is used for delivery of the message to the client, the copy of the public address remains in the message. Upon receipt, the client will analyze the message to identify the public address and compare the public address with a previously known public address. If the public address provided in the message is different from the stored public address, the client can recognize that it has changed.

Abstract: A system and method is provided for collecting and transporting DTMF digits between two network end points in a packet network in order to preserve the integrity of the DTMF digits. The system and method use a Session Initiation Protocol (SIP), which is currently defined by the standard body of Internet Engineering Task Force. SIP applications utilize certain predetermined messages, such as an INFO message, and templates. DTMF digits can be collected and transported by using the SIP INFO messages. This works especially well for telephony applications which may require mid session signaling.

Abstract: A communications system (10) includes a packet-based data network (12) that is coupled to various network elements (14, 16, 18, 20, 22, and 34) that are capable of participating in audio-based call sessions over the data network (12). The audio-based call sessions may be defined according to a Session Initiation Protocol (SIP) or to another type of protocol (e.g., H. 323). The network elements (14, 18, 22, and 34) are also capable of participating in text-based chat sessions. Text messages exchanged in such text-based chat sessions are earned in messages that are defined according to the protocol for audio-based call sessions. In one example, such messages may be SIP Info messages. The SIP Info messages carrying the text messages may be communicated either during an established audio-based call session or outside of an audio-based call session. Using SIP (or another signal protocol) messages to carry the text messages allows such messages to be conveniently transported through a firewall system.

Abstract: A telephony data switching method includes receiving data from a first party and determining whether the data from the first party is substantially all speech data. If the data from the first party is ‘substantially all’ speech data, sending the data from the first party to the speaker and deactivating a data transfer state by preventing transfer of the data captured by a microphone operable to receive data from a second party and to receive data output by a speaker. If the data from the first party is not substantially all speech data, determining whether a silent data threshold has been reached. If the silent data threshold has been reached, the method also includes activating the data transfer state and recording data from the second party. If the data transfer state has been activated, the method includes sending the data from the second party to the first party.

Abstract: An improved electrical tap connector 20 of the type having a C-shaped body member 22 having laterally opposing arcuate ears 26 extending laterally therealong and converging from a wide end to a narrow end, the body member 22 being adapted to receive a wedge member 40 having opposed converging side surfaces concave therealong defining wire-receiving channels 28 in cooperation with corresponding ones of the arcuate ears 26 opposed therefrom, a drive bolt causing the wedge member 40 to be driven into the wide end of the C-shaped body 22 and held therein, and a stabilizing member 34 at least affixed to one of the C-shaped and the wedge members 22, 40, the stabilizing member 34 being operable during movement of the wedge member 40 into a final connected position in the C-shaped member 22 to locate at least the front end 44 of the wedge member 40 substantially centrally between the arcuate ears 26 of the C-shaped member 22.