Sender And Receiver Mode - Nortel Circuit Card 311 Reference

368 NT5K21 XMFC/MFE card
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Sender and receiver mode

The XMFC/MFE circuit card provides the interface between the system's
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 network.
Receive mode
When in receive mode, the XMFC/MFE card is linked to the trunk card by
a PCM speech path over the network cards. MFC signals coming in over
the trunks are relayed to the XMFC/MFE card as though they were speech.
The XMFC/MFC card interprets each tone pair and sends the information
to the CPU through the CPU bus.
Send mode
When in send mode, the CPU sends data to the XMFC/MFE card through
the CPU bus. The CPU tells the XMFC/MFE card which tone pairs to send
and the XMFC/MFE card generates the required tones and sends them
to the trunk over the PCM network speech path. The trunk transmits the
tones to the far end.
XMFC sender and receiver specifications
Table 165 "XMFC sender specifications" (page 369)
receiver specifications" (page 369)
the NT5K21 XMFC/MFE card. These specifications conform to CCITT R2
recommendations: Q.441, Q.442, Q.451, Q.454, and Q.455.
Copyright © 2003-2008, Nortel Networks
.
Forward direction
OG-Tx, IC-Rx
700 Hz + 1300 Hz
900 Hz + 1300 Hz
1100 Hz + 1300 Hz
700 Hz + 1500 Hz
900 Hz + 1500 Hz
1100 Hz + 1500 Hz
1300 Hz + 1500 Hz
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Backward direction
and
provide the operating requirements for
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Table 166 "XMFC