Figure 253 Testing In-House Wiring; Table 89 Testing In-House Wiring - ZyXEL Communications IES-1248-51 User Manual

Figure 253 Testing In-house Wiring

Table 89 Testing In-house Wiring

STEP
A
B
C
D
Chapter 51 Troubleshooting
TEST
Connect a standard telephone to MDF 1. If there is no dial tone, then a problem with the
wire or wire connections between MDF 1 and the TELCO exists. Contact your telephone
company for troubleshooting.
Connect a telephone to the upper port of MDF 2. If there is no dial tone, then the problem
is between MDF 1 and MDF 2. Check the telephone wire and connections between MDFs
1 and 2.
Disconnect the telephone wire from CO. Connect a telephone to the telephone wire.
If there is no dial tone, then the problem is between your device and MDF 2.
Check the telephone wire's pin assignments (see
pin assignments). Replace the telephone wire if the pin assignments are OK and there is
still no dial tone.
Reconnect the telephone wire to CO.
Disconnect the telephone wire from USER. Connect a telephone to USER (see
C on page 375 for the proper pin assignments).
If there is no dial tone, your device's internal splitter may be faulty, contact your vendor.
IES-1248-51 User's Guide
Appendix C on page 375 for the proper
Appendix
363