ZyXEL Communications MSAP2000 DSL Data Transmission, There Is No Voice on an Adsl Connection

MSAP2000 AAMS User’s Guide

32.3 DSL Data Transmission

The DSL link is up, but data cannot be transmitted.

Table 70 DSL Data Transmission Troubleshooting

STEPS	CORRECTIVE ACTION
1	Check the MSAP2000 AAMS’s switch mode and port isolation settings.
	Check to see that the VPI/VCI and multiplexing mode (LLC/VC) settings in the subscriber’s
	ADSL modem or router match those of the ADSL port.
	If the subscriber is having problems with a video or other high-bandwidth services,
	make sure the MSAP2000 AAMS’s ADSL port’s data rates are set high enough.
2	Check the VLAN configuration.
3	Ping the MSAP2000 AAMS from the computer behind the ADSL modem or router.
4	If you cannot ping, connect a DSL modem to an ADSL port (that is known to work).
	If the ADSL modem or router works with a different ADSL port, there may be a problem
	with the original port. Contact the distributor.

5If using a different port does not work, try a different ADSL modem or router with the original port.

32.4There Is No Voice on an ADSL Connection

The MSAP2000 AAMS has internal POTS (Plain Old Telephone Service) splitters and Telco-50 connector CO pins that allow the telephone wiring used for ADSL connections to also simultaneously carry normal voice conversations.

Table 71 ADSL Voice Troubleshooting

STEPS	CORRECTIVE ACTION
1	Make sure the subscriber has a POTS splitter properly installed.
2	Check the ADSL line pin assignments shown in the pin assignments appendix.
3	Check the telephone wire connections between the subscriber and the MDF(s).
4	Check the telephone wire and connections between the MDF(s) and the USER lines of the
	Telco-50 connector.
5	Check the telephone wire and connections between the MDF(s) and the CO lines of
	the Telco-50 connector. Check the connection from the MDF(s) to the telephone
	company or the PBX.
6	Check the telephone wire mapping on the MDF(s).
7	Make sure the in-house wiring works and is connected properly.
8	Repeat the steps above using a different ADSL port.

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