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Demand test descriptions and error codes - Avaya Support

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DS1C-BD (DS1 Converter Circuit Pack)<br />

The DS1 converter circuit pack can be placed in any regular slot in a PN carrier. However, the<br />

DS1 converter circuit pack can only be placed in slots 1 <strong>and</strong> 21 in a Switch Node (SN) carrier.<br />

The DS1 converter circuit pack is not connected to the TDM bus or the SN backplane.<br />

Communication to the circuit pack is done through the connected EI or the SNI circuit packs.<br />

Therefore, there is considerable interaction between the DS1 converters <strong>and</strong> the connected EIs<br />

<strong>and</strong> the SNIs. A special “Y” cable connects the DS1 converter circuit pack to the Fiber Endpoint<br />

<strong>and</strong> to the facilities.<br />

Note:<br />

Note: The two DS1 converter boards, TN1654 <strong>and</strong> TN574, use unique “Y” cables that<br />

are incompatible with each other.<br />

The TN573 SNI circuit pack is incompatible with the TN1654 board. A TN573B (or<br />

higher-suffixed) SNI board must be used when connecting to a TN1654 board. The TN573B<br />

SNI board is fully backward compatible with the TN573 board <strong>and</strong> can be connected to either<br />

TN1654 or TN574 boards.<br />

Note:<br />

Note: A TN573B (or higher-suffixed) board must be used when connecting a SNI board<br />

to a TN1654 board. Error 125 will be logged <strong>and</strong> an on-board minor alarm will be<br />

generated against the SNI board if it is incompatible with the TN1654 circuit pack.<br />

Figure 22: DS1 converter Complex in Direct Connect PNC <strong>and</strong> Figure 23: DS1 Converter<br />

Complex in Duplicated PNC with 1 SN show DS1 converter connections in a direct-connect<br />

PNC configuration <strong>and</strong> between the CSS <strong>and</strong> an PN in a critical-reliability system configuration<br />

(duplicated PNC).<br />

Figure 21: DS1 converter connection to EIs <strong>and</strong> SNIs<br />

Metallic or Fiber Connection<br />

EI<br />

DS1CONV<br />

Network<br />

DS1 Facilities<br />

DS1CONV<br />

Metallic or Fiber Connection<br />

EI<br />

or<br />

SNI<br />

Issue 5 May 2009 373

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