User Manual

General Description Fixed Subscriber Unit Installation Manual
10/03/97 Release 1.00
Airstar-Wireless Local Loop
2-4
authentication, hooking signal transmission, and meter pulsing signal
transmission functions are provided.
2.1 Outgoing calls
The call handling procedure for an outgoing call is depicted in Figure 2-2 and
is described following the figure. A terminal on an FSU sends dialing
information with standard in-band DTMF tones after recognizing dial tone.
FSU
1
CO COT
RPC
RP
RP
3
4
5
3
2
Switch
MDF
MDF
Figure 2-2 : Outgoing Call
1. When the fixed standard telephone connected to the FSU
goes off-hook, the FSU detects the off-hook state, seizes
the radio link to the RP, and generates a signal to the
standard telephone. If all radio channels are occupied, a
Busy Tone is heard. Otherwise the FSU stores the dial code
from the standard telephone, converts the outgoing message
with the telephone’s number of Personal Handyphone
System (PHS) protocol, and transmits the message to the
RP.
2. The RP receives the message from that FSU through the
radio link.