Modem Installation And Maintenance Practice
Table Of Contents
- Total Access 1240 Installation and Maintenance Practice
- Front Matter
- Section 1, Introduction
- Section 2, Application Guidelines
- Section 3, Installation
- Section 4, Provisioning Defaults
- Section 5, User Interface
- Introduction
- System Management
- Logging on to the Total Access 1240
- Menu Structure
- Menu Navigation
- Menu Trees
- Menu Descriptions
- Configuration Screen
- Bridge Circuit Management Menu
- System Management Menu
- SHDSL Ports Menu
- System Alarm Log Screen
- Contact Information Screen
- Section 6, Maintenance
- Section 7, Specifications
- Appendix A, Declaration of Conformity
- Appendix B, SCA File Format
- Appendix C, Warranty
Section 5, User Interface - Menu Descriptions
61179605L5-5B 5-85
Local Dual-Sided Loopback
The local dual-sided loopback provides a bidirectional loopback at the Line Termination Unit
(LTU), as shown in Figure 5-64.
Figure 5-64. Local Dual-Sided Loopback
Local Customer Loopback
The local customer loopback provides a loopback at the LTU in the customer direction, as
shown in Figure 5-65. An Alarm Indication Signal (AIS) is injected into the network side.
Figure 5-65. Local Customer Loopback
Local Network Loopback
The local network loopback provides a loopback at the LTU in the network direction, as shown
in Figure 5-66. An AIS signal is injected into the customer side.
Figure 5-66. Local Network Loopback
LTU NTU
LTU
TX
AIS
NTU
LTU
TX AIS
NTU