Alcatel-Lucent 9500 MXC User Manual page 432

Chapter 7. Node and Terminal Plug-ins
Procedure
Vol. IV-7-42
To configure the DAC 155oM:
1. In the plug-ins screen select the required DAC 155oM from the New Module
menu. Its Line Interface screen default indicates a 63xE1multiplexed
tributary.
• If an 84xDS1 tributary is required, click the Bus Ports tab followed by
section of DS1 under Bus Port Type.
2. Within the Line Interface screen select the Frame Type.
• SDH with VC3 framing is likely to be used where interoperability between
SDH devices deployed in configurations such as terminal, add/drop,
repeater, and cross-connect are required. Three VC3s are mapped into an
STM1 signal, each containing up to 21xVC12. In turn each VC12 contains
1xE1.
• SDH with VC4 framing is used to directly map up to 63xVC12 into an
STM1 signal. In turn each VC12 contains 1xE1. VC4 framing simplifies
configuration of Terminal and Regenerator SDH applications, though may
reduce interoperability with legacy SDH equipment. VC4 framing would
normally be used where the DAC155oM is used to fiber-close a super PDH
Ring.
• SONET with STS1 framing maps three STS1 signals into a 155 Mbps
STS3 signal. Each STS1 contains up to 28xVT-1.5, with each VT-1.5
containing 1xDS1.
3. Select Clock Mode:
• Recovered Clock: Selects the clock source from the incoming STM1/OC3
signal (loop timing). Used for most applications.
• Internal Reference Clock: Selects the internally generated clock source.
Used where the DAC 155oM is used to close a Super PDH ring. In this
configuration both ends may be set to Internal reference, or one may be set
to Internal Reference and the other to Recovered
4. Use the Line Tributaries field to enter commissioned/uncommissioned, port
name, and signal label data for the STM1/OC3 tributary.
• Use the commissioned tick-box to set tributary port status:
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