Installation
CAUTION:
Terminals connected to FXS interfaces can be damaged if the configuration of the FXS interface mode
is unsuitable.
Note:
Circuit type as per EN/IEC 60950: TNV-2
4.7.3.3.1.1 FXS mode: Phone/fax
In this mode the following analogue terminals can be connected:
• Analogue phones with DTMF or pulse dialling (earth key is not supported)
• Radio units for cordless phones
•
Group 3 fax
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• Answering machines
• Modem
Figure 48: Connection for FXS mode: Phone/fax
Ports FXS1...FXS6 on the mainboard are designed for long lines and support “High voltage” for the
message LED. The no-load voltage at these ports is 48 VDC. The ports of interface cards (ETAB4) have a
no-load voltage of 53 VDC. The loop current is limited to 25 mA on all ports.
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Transmission with the T.38 protocol is recommended for Fax over IP. The corresponding media resources need to be allocated.
Release 7.1
141 System Manual for Mitel SMB Controller
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