Sender And Receiver Mode; Receive Mode; Send Mode; Xmfc Sender And Receiver Specifications - Avaya Nortel Communication Server 1000 Reference

NT5K21 XMFC/MFE card
Digit
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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 137: XMFC sender specifications
specifications
298 Circuit Card Reference
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
on page 299 provide the operating requirements for the NT5K21 XMFC/MFE
Comments? infodev@avaya.com
Backward direction
on page 299 and Table 138: XMFC receiver
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July 2011