NTAK79 2.0 Mb PRI card
Page 487 of 544
Option 11C and 11C Mini
Technical Reference Guide
DCHI special applications connection
The connection between the PRI2 and the on-board D-Channel Handler
Interface card is also available at the MDF connector. The signals confirm to
the EIA RS-422 standard. Connections would not be made to these pins for
normal on-board DCHI operation. They are available for future or special
applications.
Card-LAN interface
A Dual Port UART handles the functions of the serial ports for the Card-LAN
serial link and the echo canceller/test port interface. The echo/test interface is
an asynchronous 4800 bps 8-bit connected to port A of the UART. The card-
LAN interface is an asynchronous 19.2 kbps 9 bit start/stop connected to port
B of the UART.
The connection to the echo canceler/test port is available at the backplane/
MDF connector. The signals at this port conform to the EIA RS-232C.
Clock controller interface
The clock controller circuitry on the NTAK79 is identical to that of the
NTAK20 clock controller.
Note that while several DTI/PRI packs may exist in one system, only one
clock controller may be activated (all other DTI/PRI clock controllers must
be switched off).
Clocking modes
The clock controller can operate in one of two modes: tracking or non-
tracking (also known as free-run).
Table 152
Settings for the DCHI dip switch (SW1)
Switch
Function
On
Off
S1-1
En/Dis
Enabled
Disabled
S1-2
F/W Mode
DPNSS
DCHI
Summary of Contents for Meridian 1 Option 11C Mini
Page 2: ......
Page 8: ...Page 8 of 544 Contents 553 3011 100 Standard 14 00 January 2002 ...
Page 10: ...Page 10 of 544 About this guide 553 3011 100 Standard 14 00 January 2002 ...
Page 86: ...Page 86 of 544 Memory Storage and CPU capacity 553 3011 100 Standard 14 00 January 2002 ...
Page 176: ...Page 176 of 544 Transmission parameters 553 3011 100 Standard 14 00 January 2002 ...
Page 196: ...Page 196 of 544 Spares planning 553 3011 100 Standard 14 00 January 2002 ...
Page 226: ...Page 226 of 544 System Controller cards 553 3011 100 Standard 14 00 January 2002 ...
Page 260: ...Page 260 of 544 The TDS DTR card 553 3011 100 Standard 14 00 January 2002 ...
Page 282: ...Page 282 of 544 M2317 Telephone 553 3011 100 Standard 14 00 January 2002 ...
Page 308: ...Page 308 of 544 Meridian Modular Telephones 553 3011 100 Standard 14 00 January 2002 ...
Page 364: ...Page 364 of 544 M2250 Attendant Console 553 3011 100 Standard 14 00 January 2002 ...
Page 388: ...Page 388 of 544 NT8D14 Universal Trunk Card 553 3011 100 Standard 14 00 January 2002 ...
Page 408: ...Page 408 of 544 NT5K21 XMFC MFE card 553 3011 100 Standard 14 00 January 2002 ...
Page 414: ...Page 414 of 544 NTAG26 XMFR card 553 3011 100 Standard 14 00 January 2002 ...
Page 422: ...Page 422 of 544 NT6D71 UILC line card 553 3011 100 Standard 14 00 January 2002 ...
Page 492: ...Page 492 of 544 NTAK79 2 0 Mb PRI card 553 3011 100 Standard 14 00 January 2002 ...
Page 512: ...Page 512 of 544 NTAK20 clock controller 553 3011 100 Standard 14 00 January 2002 ...
Page 518: ...Page 518 of 544 NTAK93 D channel handler interface 553 3011 100 Standard 14 00 January 2002 ...
Page 544: ...Page 544 of 544 Index 553 3011 100 Standard 14 00 January 2002 ...
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