User's Manual

If the memory contents are lost or corrupted, they can be restored to

original default settings by reinitializing them. (See the section below

titled p.25 M

EMORY

EGISTER

NITIALIZATION

)

Input character arrays of commands quickly and sequentially.

Too slow input (taking more than 5 seconds in the initial setting)

results in command error.

4.4.2 Memory Register Initialization

The memory registers can be restored to the factory default values at any time by using

one of the following two methods.

1) Memory Register Initialization by hardware:

Use either methods stated below, in which the modem attempts to read Pin 13

(/DefParam) of the serial communication connector at the startup and starts initializing

the memory registers when it is “L”.

Method 1. Set “L” level to Pin 13 (/INIT) of the serial communication connector

with the power turned off. When the power is re-supplied, the memory registers

are initialized and the modem starts operation in the factory default state.

Method 2. Set “L” level to Pin 13 (/INIT) of the serial communication connector

while the power turned on. In this state, force “L” to Pin 11 (POWER ON) of the

serial communication connector more than 1ms, then return the level to “H”. The

modem once becomes the Shutdown mode and returns to Active mode. Since this

sequence is the same as the reset, the memory registers are initialized and the

modem starts operation in the factory default state.

2) Memory Register Initialization by Command:

1. With the modem power is on and the communication software running, enter “

INI

CR/LF

”

at the terminal prompt.

2. The modem responds with “P0” response

and immediately begins to operate using

the initialized factory default state.

While initializing the memory registers, do not turn the modem’s

power off. It take about 1 sec. to initialize the memory registers.

CAUTION