Null bearer system and method of connecting E1 data to the...

Details Null bearer system and method of connecting E1 data to the... Null bearer system and method of connecting E1 data to the...

2002-09-23

2009-06-16

Nguyen, Duc (Department: 2618)

Telecommunications

Carrier wave repeater or relay system

Portable or mobile repeater

C455S427000, C455S431000

Reexamination Certificate

active

07548725

ABSTRACT:
A demonstration telecommunication system can be utilized with a public switched telephone network (PSTN) operating in a first format. The demonstration telecommunication system allows a telecommunication network operating in a second format to communicate with the PSTN. The first format is different than the second format. The demonstration communication system includes a null bearer system including a PSTN interface for the PSTN and a telecommunication network interface for the telecommunication network. The null bearer system can be utilized with an avionic telephone system.

REFERENCES:
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patent: 6760778 (2004-07-01), Nelson et al.
patent: 2003/0055975 (2003-03-01), Nelson et al.
patent: WO 9603846 (1996-02-01), None

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