NetComm IG6000 - Manual (Page 5)

Industrial Modem User Guide
YML391­3A 5
If your modem ever suffers physical damage that causes its internal parts to become exposed, it should be
disconnected from the phone line immediately. The modem must then be repaired before reconnection to the phone
line is permissible.
Should it be necessary to physically move your modem, disconnect it from the phone line or earthing lead before
disconnecting the power connection. When reconnecting your modem, reconnect the power or earthing lead before
reconnecting it to the phone line.
Some parameters required for compliance with TelecomÕs PTC Specifications are dependent on the equipment
connected to the RS 232 port. The connected equipment shall be set to operate within the following limits for
compliance with Telecom Specifications:
1. Equipment connected to the RS 232 port shall be certified to meet the requirements of Reg. 18 of the New
Zealand Wiring Regulations 1976.
2. When the user manually initiates a call, via equipment connected to the RS232 port, the equipment shall
operate within the following restrictions:
a. Not more than 5 call attempts shall be made to the same number within a one hour period.
b. There shall be at least 60 seconds between call attempts.
c. Not more than a total of 10 call attempts shall be made to the same number for any single manual call
initiation.
d. Automatic calls to different numbers shall be not less than 5 seconds apart.
FAILURE TO MEET THE ABOVE REQUIREMENTS MAY NEGATE THE USER RIGHTS UNDER THE
TELECOM TERMS OF SERVICE.
When operating in V.22bis or V.22 mode over some older telephone exchanges, it may be necessary to issue the
&G2 command.
Setting the S0 register (auto­answer) to S0 = 1 or to values greater than 5 will render this equipment non­compliant
with the Telepermit requirements.
This equipment does not provide a guard tone with the V.22 and V.22bis answer modes. In some circumstances
this could cause interference with the telephone network signalling systems, and could result in lost calls. Telecom
will not accept responsibility should such problems occur. Such occurrences will be rare.
The preferred method is to use DTMF tones (ATDT...) as this is faster than pulse (decadic) dialling, and is
available on most New Zealand telephone exchanges. Where DTMF is not available and decadic must be used,
your communications software must be set up to record numbers according to the following translation table as the
modem is not directly compatible with the New Zealand (10­N) Reverse dialling standard.
Number to be dialled Number to program into computer
0 0
1 9
2 8
3 7
4 6
5 5
6 4
7 3
8 2
9 1
Note that where DTMF dialling is used, the numbers should be entered normally.