Intermittent Vdsl Led; Data Rate; Password; Connecting To An Ethernet Switch - ZyXEL Communications P841C User Manual

P841C Central-Side VDSL Modem

6.3 Intermittent VDSL LED

A VDSL LED turns on and off intermittently.
STEPS
1 Disconnect the phone wire coming from the VDSL port of the P841C and connect the subscriber's VDSL
modem or router directly to the VDSL port of the P841C using a different telephone wire.
If the VDSL LED stays on, check for a problem with the building's phone wire.
2 Use the VDSL commands to reset and reconnect the VDSL channel (see sections 4.1.6 and 4.1.7).

6.4 Data Rate

The SYNC-rate is not the same as the configured rate.
STEPS
1 Disconnect the phone wire coming from the VDSL port of the P841C and connect the subscriber's VDSL
modem or router directly to the VDSL port of the P841C using a different telephone wire.
If the rates match, the regular phone wire quality may be limiting the speed.
2 Use the VDSL commands to reset and reconnect the VDSL channel (see sections 4.1.6 and 4.1.7).
3 Log into the P841C, enter the VDSL status command (see section 4.1.8) and the VDSL debug command
(see section 4.1.10), take screen shots of this information and send it to your nearest customer support
representative.

6.5 Password

I forgot the password to my P841C.
STEPS
1 Contact your distributor for a "generic password". Tell them your product serial number (located on the
sticker on the bottom of the P841C) and firmware version you are using (see section 3.4.4).

6.6 Connecting to an Ethernet Switch

The P841C cannot connect to an Ethernet switch.
STEPS
1 Check your cable connections. Use a crossover Ethernet cable to connect to a hub or an Ethernet switch.
(Use a straight-through Ethernet cable to connect to a computer.)
2 The factory default settings for the Ethernet port of the P841C are:
6-2

Table 6-3 Troubleshooting a Non-Constant VDSL LED

Table 6-4 Troubleshooting the SYNC-rate

Table 6-5 Troubleshooting the Password

Table 6-6 Troubleshooting Connecting to an Ethernet Switch

CORRECTIVE ACTION
CORRECTIVE ACTION
CORRECTIVE ACTION
CORRECTIVE ACTION
Troubleshooting