User`s guide

User’s Guide ______________________________________________________________________
36 ___________________________________________________________________M210662EN-A
0306-013
Figure 23 Modem Module DMX501
The DMX501 modem module supports the following communication
standards:
- V.21, 300 bps FSK
- V.23, 1200 / 75 bps FSK
- V.22, 1200 bps DPSK
PSTN Modem
0407-008
Figure 24 PSTN Modem DXM421
The DXM421 modem is an industrial hardened modem for Public
Switched Telephone Networks (PSTN). It has been designed for
demanding environments. It is rated for - 40 to +60 °C operating
temperatures. The modem is mounted on a DIN trail inside the