Chapter 4
Troubleshooting
and Diagnostics
4.1 General
This chapter contains procedures for performing system diagnostic tests for ASM-20. Use the test procedures provided in this chapter to:
Verify normal system operation
Isolate faulty equipment in the event of failure.
Tests are activated by control push buttons on the ASM-20 front panel and monitored via LED indicators. For a description of the ASM-20 controls and indicators and their functions, see Chapter 3, Operation.
4.2 Frequently Asked Questions
Q. How is the new version of ASM-20 different from the older version?
A. ASM-20 has been improved in order to get CE mark approval and has some new features. A different ordering name, ASM-20-2, was given to the newer version. Presently, any order received for ASM-20 or ASM-20-2 will be delivered as ordered until the stock of existing ASM-20 products is depleted. After the stock is depleted, orders for any version will be delivered with the new ASM-20-2 boards only.
The following table describe the differences between the old ASM-20 and the new version.
Table 4-1 Differences in Versions
ASM-20 | ASM-20-2 |
Non-modular interfaces (V.24, | Modular interfaces |
X.21 etc.); part of the main board | |
| |
Two ordering options for | All synchronous rates from |
synchronous rates: | 19.2 kbps - 256 kbps. |
32 kbps - 128 kbps | |
32 kbps - 144 kbps | |
| |
No Ethernet support | Ethernet built-in bridge |
| |
Frequently Asked Questions 4-1
