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Server Alarms - Avaya Support

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Communication Manager Maintenance Object Repair Procedures<br />

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

and to the facilities.<br />

Note:<br />

Note: The two DS1 converter boards, TN1654 and 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 and 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 and an on-board minor alarm will be<br />

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

Figure 57: DS1 converter Complex in Direct Connect PNC and Figure 58: DS1 Converter<br />

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

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

(duplicated PNC).<br />

Figure 56: DS1 converter connection to EIs and SNIs<br />

Metallic or Fiber Connection<br />

EI<br />

DS1CONV<br />

Network<br />

DS1 Facilities<br />

DS1CONV<br />

Metallic or Fiber Connection<br />

746 Maintenance <strong>Alarms</strong> for <strong>Avaya</strong> Communication Manager, Media Gateways and <strong>Server</strong>s<br />

EI<br />

or<br />

SNI

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