Avaya S8700 Maintenance Manual page 513

USB1 (Modem Testing)
System Technician-Demanded Tests:
Descriptions and Error Codes
Always investigate tests in the order presented in the following table. For
example, by clearing error codes associated with the Handshake test, you may
also clear errors generated by other tests in the testing sequence.
Order of Investigation
Handshake test
Offhook test
Reset USB test
1. D = Destructive; ND = Nondestructive
Handshake Test
This test is destructive.
This test verifies that modem's hardware is attached and that the modem can
"handshake" with the USB port. The test:
1. Tries to open the device
2. Sends a handshake string (ATZ) to the modem
The modem should return an "OK" string.
The following errors can be detected:
Table 8-514. TEST Handshake Test
Test
Error Code Result
Modem in use, ABORT
try again later
Could not open ABORT
USB port
Read error, could ABORT
not run test
Modem
FAIL
Handshake test
failed
555-233-142
Short Test
Sequence
X
X
X
Description / Recommendation
Some other application is currently using the modem. Try again later.
System error: An attempt to open the USB device failed. Try again
later.
After the ATZ is sent, a read of the USB device is done.
If the read fails, a probable system error aborted the test. Try again.
The modem did not return an "OK" string within a 15-second interval.
Long Test
1
Sequence D/ND
X D
X D
X D
Continued on next page
Issue 1 May 2002 8-1209