Interface card and CTI system applying interface card

Details Interface card and CTI system applying interface card Interface card and CTI system applying interface card

2006-06-30

2010-06-29

Sheikh, Ayaz R (Department: 2476)

Multiplex communications

Pathfinding or routing

Through a circuit switch

C370S359000, C370S360000, C710S071000, C710S066000

Reexamination Certificate

active

07746850

ABSTRACT:
This invention discloses an interface card built in each single unit of a CTI system and connected to the Voice Processing Unit (VPU) of the single unit via local CT-BUS. On the transmitting side of an interface card, low-speed signals from the VPU in the single unit are multiplexed into a single high-speed signal and converted into LVDS signals. On the receiving side of the interface card, external high-speed LVDS signals are converted into low voltage TTL signals, demultiplexed into local CT-BUS compatible low-speed signals and sent to the VPU in the single unit. The invention also discloses a CTI system applying the interface card. The interface card and the CTI system applying the interface card feature low cost, simple and reliable connection, easy installation and operation, high reliability, large channel capacity and good expandability.

REFERENCES:
patent: 5073779 (1991-12-01), Skogmo et al.
patent: 5745786 (1998-04-01), Juall
patent: 6388591 (2002-05-01), Ng
patent: 6542584 (2003-04-01), Sherwood et al.
patent: 2006/0282694 (2006-12-01), Ichikawa
patent: 2008/0019501 (2008-01-01), Miller et al.

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