Dlp- A70 Set Up Internal Timing - Cisco ONS 15454 Series Procedure Manual

Chapter 17 DLPs A1 to A99
If BITS In State is set to OOS, continue with
Step 6
following information:
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In the BITS Out area, complete the following information, as needed:
Step 7
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If the BITS Out State is set to OOS, continue with
Step 8
following information:
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Step 9 Click Apply.
Note
Return to your originating procedure (NTP).
Step 10
DLP-A70 Set Up Internal Timing
Purpose
Tools/Equipment
Prerequisite Procedures
Required/As Needed
Onsite/Remote
Security Level
March 2005
Coding—Choose the coding used by your BITS reference, either B8ZS (binary 8-zero substitution)
or AMI (alternate mark inversion).
Framing—Choose the framing used by your BITS reference, either ESF (Extended Super Frame) or
SF (D4) (Super Frame).
Sync Messaging—Check this check box to enable SSM. SSM is not available if Framing is set to
Super Frame.
Admin SSM—If the Sync Messaging check box is not checked, you can choose the SSM
Generation 2 type from the drop-down list.
Facility Type—choose the BITS Out signal type, either DS1 or 64 Khz.
BITS Out State—If equipment is connected to the node's BITS output pins on the backplane and
you want to time the equipment from a node reference, set the BITS Out State for BITS-1 and/or
BITS-2 to IS, depending on which BITS Out pins are used for the external equipment. If equipment
is not attached to the BITS output pins, set the BITS Out State to OOS.
Coding—Choose the coding used by your BITS reference, either B8ZS or AMI.
Framing—Choose the framing used by your BITS reference, either ESF or SF (D4).
AIS Threshold—If SSM is disabled or Super Frame is used, choose the quality level where a node
sends an AIS from the BITS 1 Out and BITS 2 Out backplane pins. An AIS alarm is raised when the
optical source for the BITS reference falls to or below the SSM quality level defined in this field.
LBO—If you are timing an external device connected to the BITS Out pins, choose the distance
between the device and the ONS 15327. Options are: 0-133 ft. (default), 124-266 ft., 267-399 ft.,
400-533 ft., and 534-655 ft. Line build out (LBO) relates to the BITS cable length.
Refer to the Cisco ONS 15454 Troubleshooting Guide for timing-related alarms.
This task sets up internal timing (Stratum 3) for an ONS 15454.
None
DLP-A60 Log into CTC, page 17-66
As needed (use only if a BITS source is not available)
Onsite or remote
Provisioning or higher
Step 7. If the BITS In State is set to IS, complete the
Step 9. If BITS Out State is set to IS, complete the
Cisco ONS 15454 Procedure Guide, R5.0
DLP-A70 Set Up Internal Timing
17-77