Multi-Tech Systems 7500 - Manual (Page 166)

COM2 Port ION 7500 / ION 7600 User’s Guide
Page 166 Chapter 6 - Hardware Reference
COM2 Port
Same as for COM Port 1 except there is no RS-232 connection available, only
RS-485.
COM3 Port
Internal Modem
◆ The internal modem is multiplexed with the optical port.
◆ By default, the modem is enabled and the optical port is disabled.
1 The baud rate used between connected modems is independent of the baud rate used for
communication between the internal modem and the meter.
Higher data rates can be achieved if data compression is enabled in the modem.
Connection
Connect to the internal modem via the female RJ-11 jack located on the back of the
meter. For FCC compliant modems, use an FCC Part 68 compliant telephone cord.
If your meter has the CTR21 Compliant internal modem option, you may also
require an adapter to interface with your particular European telephone line
connection. The adapter type will depend on the telephone line standards in your
country or region (several standards may be in use in the same country).
Specification Value
Baud Rate 300 to 33,600 bps 1
Error Correction V.42 LAPM, MNP 2-4, MNP 10
Data Compression V.42 bis/MNP 5
Interface RJ11 (Tip & Ring)
Government
Approvals
FCC Modem: FCC P68 (USA), Industry Canada CS-03 (CAN)
CE Modem: CTR-21 (Austria, Belgium, Denmark, Finland,
France, Germany, Greece, Iceland, Ireland, Italy, Luxemburg,
Netherlands, Norway, Portugal, Spain, Sweden, Switzerland,
UK)
RJ11
123456
Ring
Tip