Total Access
®
3000/3010 System Manual
6TAAPP309-1E
TOTAL ACCESS 3000/3010
APP-309
Page 1 of 6
© 2002, ADTRAN, Inc.
1.1 DSL Mode Combo-Fed System Application
NOTE
References to common, but differing, parameters between the Total Access
3000 and the Total Access 3010, such as number of slots, will be conveyed
by the convention a/b. The “a” represents the Total Access 3000 parameter
and the “b” represents the Total Access 3010 parameter. For example, the
differing number of access slots in the two platforms, 28 for the Total Access
3000 and 22 for the Total Access 3010, would be displayed “28/22.”
1.1.1 Usage
The DSL Mode Combo-Fed configuration will be used when several technologies are
to be used with Total Access 3000/3010 and the shelf is to be DSX-1 and MUX-Fed.
Currently, the technologies that can be mixed together into one DSL Mode
Combo-Fed shelf are:
• T1 (T1-OR)
• HDSL (HTU-C, H2TU-C)
• ISDN (HD-10 in 8 or 10 DSL mode)
• DSX-1
The exception to mixing technologies is the ODS-2 (QFO-C). The QFO-C cannot be
used in the same shelf as a 10 DSL configured HD-10. Also, the QFO-C does not
currently support MUX-Fed operations. (This would enable the QFO-C to be used
only if wiring 8 DSL for ISDN applications.)
When mixing technologies in Total Access 3000/3010, it is important to note the shelf
can accomodate a combination of up to 28/22 modules of T1-ORs, HTU-Cs,
H2TU-Cs, DSX-1s, or up to 14/11 modules of HD-10s (8 or 10 DSL mode).
When different technologies are used in the same shelf, the wiring should follow the
DSL Mode Combo-Fed table (see Table 1). This assures the user that all technologies
reach the network via the DSX-1 connectors pairs 7 and 8 (see Table 2 and Table 3
for pinouts), the RX and TX connectors on the BNC, and the loop via the MDF
connectors pairs 1 through 5. See Table 4 for cable pinouts and Figure 1 for MDF
mapping. As long as these guidelines are followed, there is no specific ordering of
technologies or modules within Total Access 3000/3010.
NOTE
The H2TU-C delivers its HDSL2 signal to the loop on pair 2 only.
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