Chapter 3 Hardware Troubleshooting
3.3 No Voice on an ADSL Connection
The ADSL line cards allow the telephone wiring used for DSL connections to also simultaneously carry normal voice conversations.
Table 4 | Voice Troubleshooting |
STEP | CORRECTIVE ACTION |
1 | Make sure the subscriber has a POTS splitter properly installed. |
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2 | Check the telephone wire connections between the subscriber and the MDF(s). |
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3 | Check the telephone wire and connections between the MDF(s) and USER |
| port(s). Refer to the pin assignments in the line card User’s Guide. |
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4 | Check the telephone wire and connections between the MDF(s) and the CO |
| port(s). Check the telephone wire mapping on the MDF(s). |
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5 | Check the connection from the MDF(s) to the PBX or the telephone company |
| PSTN or ISDN switch. |
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6 | Make sure the |
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7 | Repeat the steps above using a different DSL port. |
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3.4 No Voice on a VoIP Connection
Check the POTS and line card connections between the subscriber, the MDF(s) and the VOP line card. See your VOP User’s Guide for more information on troubleshooting VoIP problems.
3.5 Testing Wiring
Use the following tests if there is no voice.
Systematically test wiring using a functioning telephone to determine if there is a wiring problem. If the connection is good, the telephone will return a dial tone. Letters in the figure shown next indicate the systematic tests to be done. Suppose you’re using installation scenario “B” as shown in the chapter on MDF connections. The logic for other scenarios should be similar.
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