Appeal No. 1999-2317 Page 2
Application No. 08/634,543
“*82”) followed by a destination’s telephone number.
Detection of the prefix at the caller's associated central
office switching system (“CO”) will trigger call processing
through a common channel interoffice signaling (“CCIS”)
network, which includes signaling transfer points (STPs), to
set up a call between the caller's CO and the called party's
CO through a virtual Internet link.
Claim 17, which is representative for present purposes,
follows:
17. A communications network comprising:
a switched telecommunications network having
interconnected central office switching systems and
having subscriber lines connected to said central
office switching systems providing connection
between terminals connected to said subscriber
lines, each of said central office switching systems
responding to a service request on a subscriber line
connected thereto to selectively provide a
communication connection between the requesting line
and another selected subscriber line through the
connected central office switching system or through
the connected central office switching system and at
least one other central office switching system;
a separate control network for said switched
telecommunications network comprising a common
channel interoffice signaling network including
signal transfer points connected to said central
office switching systems through signal switching
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