ZyXEL Communications IES-2500, Руководство пользователя, Страница: 53 / 65

IES-2500 User’s Guide
Hardware Troubleshooting 9-5
Table 9-6 Testing In-house Wiring
STEP TEST
D Reconnect the Telco-50 cable to the splitter chassis’ Telco-50 CO connector.
Disconnect the Telco-50 cable from the splitter chassis’ Telco-50 USER connector. Connect a telephone
to the appropriate pins of the splitter chassis’ Telco-50 USER connector (refer to the appendices for the
proper pin assignments).
If there is no dial tone, make sure that the splitter card is properly installed. Try a different splitter card. If
using a different splitter card solves the problem, replace the first splitter card.
If using a different splitter card does not solve the problem, the splitter chassis may be faulty, contact
your vendor.
E Reconnect the Telco-50 cable to the splitter chassis’ Telco-50 USER connector.
Connect a telephone to a lower port of MDF 3. If there is no dial tone, then the problem is between the
splitter chassis Telco-50
USER connector and MDF 3. Replace the Telco-50 cable connecting the USER
port to MDF 3.
If the problem remains, check the pin assignments of the USER Telco-50 connector.
If the problem remains, then the IES-2500 or MDF 3 is faulty. Repeat the test in step A using MDF 3 to
determine if MDF 3 has problems. Contact the telephone company if that is the case.
If not, contact your IES-2500 vendor outlining the problem and the steps you took to solve it.
F Disconnect the DSL modem from the wall jack and connect the telephone to the wall jack. If there is no
dial tone, then there is a problem with the building wiring between the DSL subscriber’s home and the
MDF. Contact your telephone company for troubleshooting.