7-20
Cisco ONS 15327 User Documentation, R3.3
June 2002
Chapter 7 Card Provisioning
Using Virtual Wires
Step 6
Click
Apply.
Figure 7-7 shows a functional diagram of alarm input and output.
Figure 7-7
Example of the external alarm input and output process
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:
•
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.
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.
Relay
Relay
Relay
Relay
CTC alarm turns on
an external device
External device
generates CTC alarm
External control
External alarms
Heat
sensor
Smoke
detector
Light
Bell
38566
= External alarm
= External control
Summary of Contents for ONS 15327
Page 22: ...Contents xxii Cisco ONS 15327 User Documentation June 2002 I N D E X ...
Page 30: ...Figures xxviii Cisco ONS 15327 User Documentation June 2002 ...
Page 44: ...Procedures xlii Cisco ONS 15454 Installation and Operations Guide R3 2 June 2002 ...
Page 540: ...Glossary GL 16 Cisco ONS 15327 User Documentation R3 3 June 2002 ...