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1152700 • Issue 1 • February 2001 • Section 2 Operation and Maintenance
Page 2-239
© 2000, ADC Telecommunications, Inc.
DLP-752
Page 3 of 4
Table 752-1. 155 SM/MM CRS Card Configuration Options, continued
SELECTION DEFAULT OPTIONS DEFINITIONS
Transmit
Timing Source
System System
Received
Uses Primary timing reference.
Uses clock derived from incoming receive fiber
(also known as Line-Timing).
Do Not Use for
Sync
False Selected (True)
Non-selected (False)
Outputs DUS (Do not Use for Sync) in the S1
byte of the SONET overhead.
Enable Signal
Degrade
Not
Selected
Selected
Not Selected
Enables a protection switch of the traffic if the
input signal strength drops below tolerable
levels set by the user in the BER threshold
selection.
Signal Degrade
BER Threshold
55 through 9
Defines the number of bit errors the port can
incur before a signal degrade occurs and
generates an alarm message and probably
protection switch.
Medium Type SONET SONET
SDH
Synchronous Optical Network, US standard for
transporting data over fiber.
Synchronous Digital Hierarchy, European
standard for transporting data over fiber.
Loopback
Towards
None None
Terminal
Facility
No loopback is requested or active.
A loopback has been activated sending the
signal back to the terminal side.
A loopback has been activated sending the
signal back to the facility side.
Line Coding NRZ Not configurable by user.
Line Type Card
Dependant
SonetOther
sonetShortSingleMode
sonetLongSingleMode
sonetMultiMode
Not configurable by user, dependant on card
type inserted.
Transmit Path
Trace
User
defined
User can define a unique ID to this port for
identification purposes on SM cards only.
Table 752-2. ATM Interface Configuration Options
SELECTION DEFAULT OPTIONS DEFINITIONS
Interface Name <default> Alphanumeric User defined, up to 20 alphanumeric characters.
Loopback Location
Code
All 1s Alphanumeri
c
Used to loopback the incoming signal and transmit it
back to the customer equipment. The code is limited
to 16 numeric characters.
(continued)