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interface connector type.
3. Voice/fax ribbon cable 1. Reconnect the voice/fax ribbon cable not connected.
between the voicefax and aggregate board. Refer to the
installation procedures in Chapter 4.
2. Call Tech Support for assistance,
refer to Chapter 8.
4. MV2 Board failure 1. Perform the voice/fax loopback test
(test 12), refer to voice/fax channel testing procedures in this chapter.
2. Call Tech Support for assistance,
refer to Chapter 8.
A voice/fax channel 1. Voice/fax channel 1. Verify that the voice/fax channel is
cannot communicate configuration problem. configured for the correct node and
with the remote site channel destinaton and composite
link. Use the VL command to view the voice/fax channel parameters,
refer to Chapter 5.
Table 7-2. Voice/Fax Troubleshooting Guide (Continued)
Condition Possible Cause Corrective Action
A voice/fax channel 2. Wrong type of telephone 1. Ensure that the telephone cord cannot communicate
cord. connected to the voice/fax channel is with the remote site an RJ11 for
the FXO and/or FXS (Continued) connector(s) or E&M cable for the
E&M 1-5 connection.
No voice/fax 1. Frame ground not 1. Attach PBX ground to MultiMux frame
communication connected to PBX ground screw.
E&M to E&M
2. Voice/fax configuration 1. Verify that voice/fax channel is problem.
configured properly, (E&M, wink or dial tone, 2 or 4 wire, E&M type).
3. Incorrect E&M cabling. 1. Verify connection of E&M cable to
PBX. See Appendix D as well as PBX documentation.
2. Verify that XSG LED lights when PBX
asserts the M lead and that RSG LED lights when MultiMux asserts
the E lead.
Voice sounds broken 1. Excessive errors on 1. Examine composite statistics for up or grabled at times
composite link. errors.
2. Perform local and remote loop back
tests to determine failing unit or bad communication line.
3. Call phone company and
communication line.
4. Call Tech Support for assistance,
refer to Chapter 8.