Digit
Forward direction OG-Tx, IC-Rx
Backward direction
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
—
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
on page 299 and
on page 299 provide the operating requirements for the NT5K21 XMFC/MFE
NT5K21 XMFC/MFE card
298 Circuit Card Reference
July 2011
Summary of Contents for 1000 Series
Page 1: ...Circuit Card Reference Nortel Communication Server 1000 7 0 NN43001 311 04 04 July 2011 ...
Page 20: ...20 Circuit Card Reference July 2011 ...
Page 30: ...Introduction 30 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 116: ...Option settings 116 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 143: ...Figure 25 CP PIV card front Physical description Circuit Card Reference July 2011 143 ...
Page 148: ...NT4N39AA CP Pentium IV Card 148 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 287: ...Figure 86 Clock Controller Option 3 Operation Circuit Card Reference July 2011 287 ...
Page 302: ...NT5K21 XMFC MFE card 302 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 346: ...NT6D80 MSDL card 346 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 353: ...Figure 96 NTDK16 DLC Functional description Circuit Card Reference July 2011 353 ...
Page 461: ...Figure 147 Paging trunk operation Applications Circuit Card Reference July 2011 461 ...
Page 462: ...NT8D15 E and M Trunk card 462 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 500: ...NTAK09 1 5 Mb DTI PRI card 500 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 512: ...NTAK10 2 0 Mb DTI card 512 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 534: ...NTAK79 2 0 Mb PRI card 534 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 550: ...NTBK22 MISP card 550 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 560: ...NTBK50 2 0 Mb PRI card 560 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 595: ...Figure 165 MGC block diagram Introduction Circuit Card Reference July 2011 595 ...
Page 662: ...NTRB21 DTI PRI DCH TMDI card 662 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 668: ...NTVQ01xx Media Card 668 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 700: ......