Table 541-1, For loopback toggle field options.) a blank – ADC Soneplex Broadband System User Manual
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ADCP-61-471 • Issue 4 • June 2000 • Section 2: Operation and Maintenance
2-135
© 2000, ADC Telecommunications, Inc.
DLP-541
Page 6 of 16
Table 541-1. Loopback Selection Field Options
FIELD
UNIT TYPE
LOOPBACK TYPE
OPTION
SHOWN IN…
DS3 MUX (HIGH SPEED)
Local DS3 MUX Network Loopback at the DS3 MUX ACT NET
HDSL SYSTEMS (LOW SPEED)
Local HLXC Customer Loopback at the HLXC ACT CUST
Network Loopback at the HLXC ACT NET
Local HLXC Send Loopback at the HLXC Module SEND LPBK*
Remote HLXR Customer Loopback at the HLXR ACT CUST
Network Loopback at the HLXR ACT NET
HDSL SYSTEM WITH ONE HRX (LOW SPEED)
Repeater HRX1 Customer Loopback at the HRX ACT CUST
Network Loopback at the HRX ACT NET
HDSL SYSTEM WITH TWO HRXS (LOW SPEED)
Repeater 1 HRX1 Customer Loopback at the HRX1 ACT CUST
Network Loopback at the HRX1 ACT NET
Repeater 2
HRX2
Customer Loopback at the HRX2
ACT CUST
not shown
Network Loopback at the HRX2
ACT NET
not shown
FIBER OPTIC SYSTEM WITH ODS2 AND QLX MODULES (LOW SPEED)
Local ODS2 Customer Loopback at the ODS2 Module ACT CUST
Remote QLX Network Loopback at the Remote QLX ACT NET
Local ODS2 Send Loopback at the ODS2 Module SEND LPBK*
T1 SYSTEM WITH DLX MODULE (LOW SPEED)
Local DLX Customer Loopback at the DLX ACT CUST
Network Loopback at the DLX ACT NET
Local DLX Send Loopback at the DLX Module SEND LPBK*
T1 SYSTEM WITH RLX MODULE (LOW SPEED)
Local RLX Customer Loopback at the RLX ACT CUST
Network Loopback at the RLX ACT NET
Local RLX Send Loopback at the RLX Module SEND LPBK*
* The SEND LPBK option is only available in the Soneplex Broadband System at the Local command toggle
field on the Loopback Status/Commands screen when the DS1 Loopback Mode field on the DS3 MUX
Configuration screen is configured as C-Bit parity.
Note: When a customer (CPE) loopback is in progress, the network output signal is returned to the network as a
keep-alive for network equipment. However, when a network loopback is in progress, an unframed all 1s signal
(AIS) is transmitted to the customer interface.