1152700 • Issue 1 • February 2001 • Section 2 Operation and Maintenance
Page 3 of 4
Table
SELECTION
Timing Port
Line Type
ATM Mapping Types
Transmit Timing Source
Line Build Out
Loopback Config.
Far End Loopback
DEFAULT
None
M23
Direct
Local
Off
None
None
OPTIONS
None
Port 1
Port 2
Port 3
M23
Direct
PLCP
Received
Local
Off / On
None
Terminal
Facility
Payload
Payload
Reset
Line
DEFINITIONS
None does not provide timing when card slot is selected, or uses Port 1, 2, or 3 for timing source when slot is selected for system timing from Timing Resource screen.
Asynchronous, M23 multiplex format, PM parameters based on
Synchronous T3, M13 multiplex format, separate PM parameters based on
HEC based “Direct” mapping.
Physical Layer Convergence Protocol mapping.
The Tx clock (and data rate) is the same frequency as the RX clock and data rate (receive clock is looped to the transmitter).
The
Sets the signal level to compensate for the distance between the system and the interfacing equipment.
No loopback activated on this card.
Sends cells back to the cellbus and back out to the ring. No changes are made to the path layer.
Loops the incoming signal back to the CPE and generates AIS to the cellbus.
Loops the signal back to the CPE AFTER framing is performed and before being converted to ATM cells.
Determine the type of loop back at the far end to test continuity between the far end and near end.
Table 753-2. ATM Interface Configuration Options
SELECTION
Interface Name
Loopback Location Code
Recording Interface ID
DEFAULT
All 1s
All 0s
OPTIONS
Alphanumeric
Alphanumeric
Numeric
DEFINITIONS
User defined, up to 20 alpha numeric characters.
Used to loopback the incoming signal and transmit it back to the customer equipment. The code is limited to 16 numeric characters.
Identifies the site card and port location for customer billing capabilities, (allows assignment of a customer ID for each port.) The code is limited to 15 numeric characters.
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© 2000, ADC Telecommunications, Inc.
