Cisco 15454-DS1-14= - 1.544Mbps Expansion Module Dokumentacja Pobierz pdf (Strona 16)

Cisco ONS 15454 Product Overview

Card Protection

Cisco ONS 15454 Product Overview, R3.3

May 2002

Figure 8 1:1 electrical card protection in the ONS 15454

Electrical Protection

1:N protection allows a single card to protect several working cards. A DS1N-14

card provides protection for up to five DS1-14 cards, and a DS3N-12/DS3N-12E

card protects up to five DS3-12/DS3-12E cards. The standard DS1-14 card and

DS3-12 card provide 1:1 protection only.

1:N protection operates only at the DS-1 and DS-3 levels. The 1:N protect cards must

match the levels of their working cards. For example, a DS1N-14 protects only

DS1-14 or other DS1N-14 cards, and a DS3N-12 protects only DS3-12 or other

DS3N-12 cards. 1:N cards have added circuitry to act as the protection card in a 1:N

protection group. Otherwise, the card is identical to the standard card and can serve

as a normal working card. 1:1 and 1:N protection in the ONS 15454 supports

revertive and non-revertive switching.

33384

1:1 Protection

TCC+

XC10G

AIC (Optional)

XC10G

TCC+

Working

Protect

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 55 56

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Cisco 15454-DS1-14= - 1.544Mbps Expansion Module Dokumentacja Strona 16