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Cisco ONS 15454 Installation and Operations Guide
November 2001
Chapter 7 Card Provisioning
Converting DS-1 and DS-3 Cards From 1:1 to 1:N Protection
Figure 7-7 Provisioning local orderwire
Step 3
In the Available Ports list, select each port that you want to use for the orderwire channel and click Add
to move them to the Selected Ports column.
Step 4 If needed, adjust the Tx and Rx dBm by moving the slider to the right or left for the headset type
(four-wire or two-wire) that you will use. In general, you should not need to adjust the dBm.
Step 5 Click Apply.
7.5.3 Using the AIC Orderwire
The AIC orderwire channels function as a party line. Anyone plugging a phone set into an AIC orderwire
channel can communicate with all participants on the connected orderwire. The AIC does not provide
private, point-to-point connections. To alert participants, press the AIC Call button to activate a buzzer
and illuminate the RING LED on AICs at all connected nodes.
7.6 Converting DS-1 and DS-3 Cards From 1:1 to 1:N Protection
The ONS 15454 provides three protection options for DS1-14 and DS3-12 cards: unprotected, 1:1, and
1:N (N=5 or less). Changing protection from 1:1 to 1:N increases the available bandwidth because two
of the three cards used for protection in the 1:1 protection group become working cards in the 1:N group.
When setting up 1:N protection, install the DS1N-14 or DS3N-12 card in Slot 3 or 15 on the same side
of the ONS 15454 as the cards it protects. Slot 3 protects cards in Slots 1 - 2 and 4 - 6. Slot 15 protects
Slots 12 - 14 and 16 - 17. A DS1N-14 or DS3N-12 card installed in Slot 3 or 15 can protect up to five
DS1-14 or DS3-12 cards. If you install a DS3N-12 or DS1N-14 card in another slot, it behaves like a
normal DS-1 or DS-3 card.