Cisco Cisco ONS 15310-MA SONET Multiservice Platform Guida All'Installazione

This document provides a card description, specifications, and an installation procedure for the 
Cisco ONS 15310-MA DS1-28/DS3-EC1-3 and DS1-84/DS3-EC1-3 cards. As appropriate use this 
document in conjunction with the Cisco ONS 15310-CL and Cisco ONS 15310-MA Procedure Guide, 
the Cisco ONS 15310-CL and Cisco ONS 15310-MA Reference Manual, and the Cisco ONS 15310-CL 
and Cisco ONS 15310-MA Troubleshooting Guide when working with DS1-28/DS3-EC1-3 and 
DS1-84/DS3-EC1-3 cards.

This document contains the following sections:

The ONS 15310-MA DS1-28/DS3-EC1-3 and DS1-84/DS3-EC1-3 cards provide 28 or 84 
Telcordia-compliant, GR-499 DS-1 ports per card, respectively, and three DS-3/EC-1 ports. Each DS-1 
port operates at 1.544 Mbps. Each DS-3/EC-1 port operates at 44.736 Mbps over a single 75-ohm 728 A 
or equivalent coaxial span. These cards can operate as a working or protect card in 1:1 protection 
schemes.

In addition, the DS1-28/DS3-EC1-3 card provides retiming, so that any outgoing DS-1 signal can be 
retimed to eliminate accumulated jitter and wander at the point of egress from a synchronous network. 
Any incoming DS-1 signal from the transport element can also be used as timing source.