Nortel DMS-100 Series Reference Manual page 343

Datafilling table MTAMDRVE
The metallic test access (MTA) network is a matrix of vertical and
horizontal crosspoints. The matrix is like a minibar that connects specified
verticals to horizontals in the MTA. The MTA tests equipment. The
horizontal connections in the MTA connect the test equipment to the vertical
connections. The circuit lines attach in the vertical connections.
You can interconnect smaller minibar circuits to construct an MTA network
of the required size. The smaller minibar circuits serve as building block
components. The NT3X09AA Driver allows metallic test access to remote
line concentrating devices (LCMs). This condition includes LCMs off the
RCO2. The NT3X09AA is a four vertical by eight horizontal circuit. The
NT3X09BA is an eight vertical by eight horizontal circuit. An diagram of
the MTA matrix appears in the following figure.
MTA matrix
DMS-100 Family XPM International Translations Reference Manual XPM12 and up
0
0
2X50AB
7
15
24
127
The 0, 0 crosspoint of an MTA driver locates the driver in the MTA matrix. This
driver has a vertical start location of 20 and a horizontal start location of 8.
Datafilling BAS on RSC-S UK / Europe 4-93
Basic call processing
MTA verticals
19 24 32
3X09BA
(continued)
639