9500 MXC User Manual
3DB 23063 ADAA - Rev 004 July 2007 Vol. IV-7-25
DAC/Tributary Configuration
For a 9500 MXC Node the DAC provides the link between the user interface and
the TDM backplane. Different DACs provide NxE1/DS1, NxE3/DS3, NxSTM1/
OC3, or Ethernet 10/100/1000 interfaces. E3/DS3 and STM1/OC3 DACs may be
paired to provide redundancy in the event of a DAC failure.
For a 9500 MXC Terminal, the available tributary interface options depend on
the IDU variant.
• For the IDU 20x, trib screen functionality is identical to DAC 4x or DAC 16x.
• For the IDU 155o, trib screen functionality is as for the DAC 155o.
• For the IDU ES, screen functionality is as for the DAC ES for its Ethernet
transport options, and as for the DAC 4/16x for its wayside tributary options.
• The protectable IDUs provide terminal-based protection, meaning switching
occurs on all tribs in the event of a switching event.
Table 7-6 lists available DACs for 9500 MXC Node, and shows which DACs can
be protected.
Table 7-6. DAC Variants
Refer to:
• Naming on page 7-26
• Tributary Protection on page 7-26
Refer to: Connection Protectable
DAC 16x 16xE1/DS1 No
DAC 4x 4xE1/DS1 No
DAC 3xE3/DS3M
1/2/3xE3/DS3, E13/D13, or 34 Mbps
transparent
Yes
DAC 1x155o 1xSTM1/OC3 Yes
DAC 2x155o 2xSTM1/OC3 Yes
DAC 155oM 1xSTM1/OC3 optical to NxE1/DS1
multiplexer
Yes
DAC 2x155e
2xSTM1 electrical Yes
DAC ES 10/100Base-T Ethernet No
DAC GE Gigabit Ethernet No
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