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NT5K21 XMFC/MFE card Page 403 of 544
Option 11C and 11C Mini Technical Reference Guide
Table 124 on page 403lists the forward and backward frequencies for MFE.
The one backward signal for MFE is referred to as the “control” frequency.
Sender and receiver mode
The XMFC/MFE circuit card provides the interface between the Option 11C
CPU and the trunk circuit which uses MFC or MFE signaling.
The XMFC/MFE circuit card transmits and receives forward and backward
signals simultaneously on two channels. Each channel is programmed like a
peripheral circuit card unit, with its own sending and receiving timeslots in
the Meridian network.
Table 124
MFE Frequency values
Digit
Forward direction
OG-Tx, IC-Rx
Backward direction
1 700 Hz + 900 Hz 1900 Hz
(Control Frequency)
2 700 Hz + 1100 Hz —
3 900 Hz + 1100 Hz —
4 700 Hz + 1300 Hz —
5 900 Hz + 1300 Hz —
6 1100 Hz + 1300 Hz —
7 700 Hz + 1500 Hz —
8 900 Hz + 1500 Hz —
9 1100 Hz + 1500 Hz —
10 1300 Hz + 1500 Hz —