PS-SAU-1900E
Mar. 8
th
,1999 (Rev. 0.0)
--- CONFIDENTIAL AND PROPRIETARY ---
21
The operation of the Digital part of CDM which relates to the J-STD-008 CDMA air interface is governed
by TIA / EIA / J-STD-008, Mobile Station - Personal Station Base Station Compatibility Requirements for
1.8 to 2.0 GHz Code Division Multiple Access(CDMA) Personal Communication Systems. Special
operational considerations which apply to the specific LAU application are defined elsewhere in this
specification.
2.7.
Analog Fax Module Interface(AFMI).
The Anlog Fax Module Interface(AFMI) necessary interfaces between LAU and Analog Fax Module:
•
Serial communication with Analog Fax Module(MDL-1).
•
Provide power for MDL-1
•
Provide Hook status to MDL-1
•
Power Save Information to MDL-1 when MDL-1 is not in use.
•
Tx/Rx Audio level fax data interface.
2.7.2. Functional
Characteristics.
The operation of the AFMI supposed to communicate with Analog Fax Module(MDL-1) and transmit and
receive G3 9600BPS FAX via LAU’s RJ-11 telephone interface.
Received Analog fax information by LAU are fed to MDL-1 and converted to Digital fax information by
MDL-1 than returned to LAU to translate/transmit proper fax signal over the air using IS-99 and IS-707
service option 5 and 13.
3. Software
Description.
The LAU software package consists of the following major subsystems.
•
J-STD-008 Air Interface Module:
This module is a real time multi-tasking software package
provided by Qualcomm, and designed to run specifically with the Qualcomm Mobile Station Modem
(MSM) and Base Band ASIC (BBA) system ICs. This module is responsible for all internal aspects
of the J-STD-008 protocol.
•
Telephone Interface Module:
This module provides the interface between the specific hardware
application and the Qualcomm J-STD-008 Air Interface module. It’s primary function is to interface
with any application-specific external hardware that is built around Qualcomm chipset. In the LAU,
this hardware includes all external memory, RF circuitry, line interface hardware, battery
management and power supply hardware. The module also contains code segments which are
designed to permit the LAU to emulate a Central Office Analog Telephone interface.
•
Test and Configuration Module:
The function of this code segment is to permit one to test the
unit, or to configure it for a certain set of operating conditions. The user interfaces to this portion of
the code via the serial interface port. A stand-alone PC-based application and a special hardware
interface unit facilitate the interface.
•
IS-99 and 707 interface Module:
This module provide Data service by interfacing serial
communication line on service port and J-STD-008 Air Interface module.
3.1. Telephone
Interface.
The Telephone Interface consists of two distinct functional segments. These segments are not unique,
easily identifiable code blocks. Instead, they consist of numerous small code portions which are
