Provisioning Orderwire Pass-Through; Figure 7-7 Example Of The External Alarm Input And Output Process - Cisco ONS 15327 User Documentation

Using Virtual Wires
Click Apply.
Step 6
Figure 7-7 shows a functional diagram of alarm input and output.
Figure 7-7
Bell
Light
CTC alarm turns on

7.5.3 Provisioning Orderwire Pass-Through

Orderwire allows onsite personnel to communicate with one another using standard phone sets.
Although the ONS 15327 does not terminate orderwire (there is no RJ-11 jack), it can pass through Local
and Express orderwire traffic using the SONET Orderwire overhead:
•
•
Use the E1 byte (Local) when making orderwire connections to section terminating equipment and the
E2 byte (Express) when making orderwire connections to line terminating equipment. The ONS 15327
and ONS 15454 are both section and line terminating equipment. When provisioning orderwire
pass-through across networks that are exclusively ONS 15327s and/or ONS 15454s, you can use either
Local or Express orderwire. If other equipment will be used to pass or terminate orderwire traffic,
consult the documentation for that equipment to determine if it is section or line terminating equipment.
Cisco ONS 15327 User Documentation, R3.3
7-20
Example of the external alarm input and output process
External control
Relay
Relay
an external device
Local orderwire is carried on the SONET Section layer E1 byte. Regenerators on either side of ONS
15327 nodes terminate the channel.
Express orderwire is carried on the E2 byte of the SONET Line layer. Regenerators on either side
of ONS 15327 nodes terminate the channel.
Chapter 7 Card Provisioning
External alarms
Smoke
detector
Relay
Relay
Heat
sensor
External device
generates CTC alarm
= External alarm
= External control
June 2002