Robert R. Hackett - Whitehouse Station NJ Gregory S. Kenepp - Bridgewater NJ Michael M. Luniewicz - Whitehouse Station NJ Martin L. Swim - Morristown NJ
Assignee:
Integrated Network Corporation - Bridgewater NJ
International Classification:
H04J 312
US Classification:
3701101
Abstract:
A line interface module and selected channel unit modules are replaced in a digital terminal which couples time multiplexed digital communications lines to a plurality of voice signal lines. The line interface unit is provided with means for responding to a controller to insert PCM data into selected time slots of the PCM signal on the digital line and to latch data received on the line. In addition to receiving pulse amplitude modulated signals from a receive unit in the terminal, voice channel units may also receive the PCM code. A state machine in the channel unit recognizes control sequences of insert data. By means of the insert data, the controller may direct provisioning of the channel unit with such adjustments as gain control and equalization. It may also direct the channel unit to switch to a loopback mode of operation for diagnostics. PCM corresponding to tones may also be inserted by the line interface unit to assist in diagnostics.
Searchable Directory For Provisioning Private Connections
Systems and methods are provided for setting up persistent, secure communication channels between remote groups of individuals over an unreliable network such as a packet switched or frame relay network. A group, which could be an individual, searches for another group, which could be an individual, through a hierarchical search structure. When the search results in a group that the searching group wants to communicate with, the searching group sends an invitation to the identified group and when the invitation is accepted a persistent communication channel is configured between the two groups.