0049-1800-xxx 326X V.34, V.34-SDC and V.32bis Series Modem – USER’S GUIDE 02/23/2010
Rev. A
Page 152
of
205
cable to the theoretical limit and retry the steps listed in this section. (If the same cable length is
required, it is recommended that a low capacitance type cable be used.)
If the modem is installed at a host site, perform the following steps:
1)
Set the Mode option AT
*
SM (EC/DC OPT’S category) to Reliable. (Reliable mode ensures data
is transmitted during this test.)
NOTE
: Do not initiate loop tests while performing the diagnostic
procedures in this section.
2)
Follow Steps 1 to 3 in the section above to verify the cable at a remote site.
3)
Once the cable at the remote site has been verified, initiate a dial connection with the host site.
4)
If there are no errors in data transmission, the cable at the host site is most likely appropriate for
the application.
5)
If the transmitted and received messages are different, the cable at the host site is most likely
incorrect for the application. Verify the cable length to the limit specified in Table B-4. Reduce
the cable length or capacitance of the cable to the theoretical limit and retry Steps 1 to 3 in the
section above. (If the same cable length is required, it is recommended that a low capacitance
type cable be used.)
NOTE
: These tests should be done prior to a Local Analog Loopback (LAL) or Remote Digital
Loopback (RDL) test when troubleshooting.
