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Cisco ONS 15310-MA SDH Reference Manual, Release 9.1 and Release 9.2
78-19417-01
Chapter 3 Card Protection
ONS 15310-MA SDH Card and Port Protection
3.2.1 1:1 Electrical Card Protection
The ONS 15310-MA SDH chassis accommodates two types of electrical cards, the E1_21_E3_DS3_3
and E1_63_E3_DS3_3, and one type of common-control card, the 15310E-CTX-K9. Figure 3-1
illustrates one possible chassis configuration, with two 15310E-CTX-K9 cards and two pairs of
E1_63_E3_DS3_3 cards.
The following examples show a few of the several possible ONS 15310-MA SDH chassis configurations:
• No electrical cards at all. This is the case if you choose to install Ethernet cards, such as the
CE-100T-8 or ML-100T-8, instead of electrical cards. The Ethernet cards cannot be used to form a
protection group.
• Unprotected electrical cards. This is the case if, instead of a pair of electrical cards in Slots 1 and 2
or 5 and 6, you install only a single electrical card in Slots 1, 2, 5, or 6. A filler card or Ethernet card
must be installed in a slot where an input/output (I/O) card is missing.
• A single 15310E-CTX-K9 card. In this case, a filler card must be installed in a slot where a
15310E-CTX-K9 card is missing.
• A mix of electrical cards. An E1_21_E3_DS3_3 card can protect an adjacent E1_21_E3_DS3_3
card, an E1_63_E3_DS3_3 card can protect an adjacent E1_63_E3_DS3_3 card, and an
E1_63_E3_DS3_3 card can protect an adjacent E1_21_E3_DS3_3 card. However, an
E1_21_E3_DS3_3 card cannot protect an adjacent E1_63_E3_DS3_3 card.
Figure 3-1 ONS 15310-MA SDH Chassis Card Layout
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