Telephone exchange system and switching connection method improv

Details Telephone exchange system and switching connection method improv Telephone exchange system and switching connection method improv

1998-07-28

1999-12-07

Smith, Creighton

Telephonic communications

Plural exchange network or interconnection

379207, 379229, H04M 700

Patent

active

059996153

ABSTRACT:
A telephone exchange system comprises out-of-town exchanges and local exchanges, the local exchange keeping a communication channel established between a telephone and an out-of-town exchange without breaking the communication channel until satisfying a predetermined condition even if the telephone is on the hook when the connection has been established between the out-of-town exchange and the telephone having made a call, the out-of-town exchange keeping a communication channel established between a local exchange or an out-of-town exchange and the other out-of-town exchange or itself without breaking the communication channel until satisfying a predetermined condition even if the telephone is on the hook when the connection has been established between the local exchange or the out-of-town exchange that is a calling source and the out-of-town exchange or the local exchange that is a calling destination.

REFERENCES:
patent: 5771284 (1998-06-01), Sonnenberg
patent: 5878126 (1999-03-01), Velamuri et al.

Affiliated with

Also associated with

Rating

Telephone exchange system and switching connection method improv does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Telephone exchange system and switching connection method improv, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Telephone exchange system and switching connection method improv will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-832921