Appeal No. 2001-2055 Page 8
Application No. 08/750,870
and responds to the requests via the signaling connections. To wit, the appellants
admit that one type of "service request takes place when the roamer . . . requests call
forwarding." (Reply Br. at 4.)3 They emphasize, "it is true that the setting up of call
forwarding uses only signaling connections," (id. at 3), admitting that "establishing a call
forwarding setting in the Home MTSO site is carried out by a multi-frequency signaling
path (i.e., not a communications connection)." (Id.) For its part, Sonberg's description
of "the activating of transparent call forwarding," col. 3, ll. 20-21, corroborates their
admissions. Specifically, "[w]hen a roamer dials *31, the foreign MTSO switch 16
sends the mobile identification number (MIN) and the code for the selected call routing
option to the VRS 12. In a preferred embodiment the physical interface is a T-1 (DS1
span), and multi-frequency (MF) signalling is utilized to pass the information from the
switch 16 to the VRS 12." Id. at ll. 21-28.
In addition, it is uncontested that the reference's cellular telephone system can
establish a communications connection with its roamer by forwarding a user's call
thereto. To wit, the appellants admit, "[a] communications connection is . . . established
if a call from another user is made to the roamer." (Reply Br. at 4.) More specifically,
3Another type of service request takes place when the roamer requests call
notification.
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