H3C Technologies H3C MSR 50 - Manual (Page 271)

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Figure 4-98 DFIC-24FXO24FXS conversion cable
Based on the actual needs, the RJ-11 connectors of the FXS interface conversion cable can be
connected to the cable distribution frame or to the phones directly or after being prolonged. And the
RJ-11 connectors of the FXO interface cable can be connected to a subscriber’s PBX or to the
subscriber line at the Central Office.
Connecting the interface cable
Step1 Connect the D50 male connector on one end of the cable to the module.
Step2 Connect the RJ-11 connectors on the other end of the cable to the following devices:
z
Telephones, Faxes or the AT0 loop trunk lines of the telephone switchboard if FXS is used.
z
Regular subscriber lines of the telephone switchboard if FXO is used.
Make sure the screws at both sides of the DFIC-24FXO24FXS module interface are tight.