CTP Systems CTPhone 1900, Applications Manual

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DOC00101-01 1-15
CTPhone 1900 System Overview
Calls Initiated from a CTPhone Handset
1 The handset locks onto a system base station and initiates a service
request.
2 The base station transmits calling information to the CTPhone Control-
ler. The call then proceeds like any other call in the office telephone
system.
Call Termination
Call termination involves freeing a voice channel and transition of the
CTPhone handset to a standby state. When the CTPhone Controller
determines that a call has terminated, it sends a release message to the
base station. The base station and handset then terminate the RF link.
In some cases, the base station must initiate call termination by sending a
message to the CTPhone Controller. Loss of handset power, interference
with the RF signal, or a user stepping out of base station coverage are
examples of events that cause the base station to terminate a call.
Regulatory Information (United States Only)
The CTPhone 1900 system complies with Federal Communications Com-
mission (FCC) Regulations Part 15 and Part 68 Subpart C. The FCC Part
68 registration number is 5RYISR-23723-WC-T. The Ringer Equivalence
Number is specified as 0.6B.
The CTPhone 1900 system is designed to operate under FCC Part 15
rules for Unlicensed Personal Communications Service (U-PCS) equip-
ment in the 1920–1930 MHz band. Part 15 ID numbers for the eight-chan-
nel base station, four-channel “Mini” base station, and handset are MTU-
1900-BS-A1, MTU-1900-BS-B1, and MTU-1900-HS-A1, respectively.
Because microwave services are currently also offered in the 1920–1930
MHz band, the FCC has designated UTAM, Inc. to coordinate the transi-
tion of microwave services to other frequency bands and manage the
installation of new U-PCS equipment in the band. CTP Systems’ CTPhone
UTAM certification ID is MTUCCLUM00006.
The CTPhone 1900 system complies with Underwriters Laboratories spec-
ification UL1459 for safety. The compliance ID is C86-0345.
Detailed information on these requirements is in Appendix A.