Lancom Systems 3550 - Manual (Page 71)

LANCOM 3550 Wireless
࡯ Chapter 9: Troubleshooting
71
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9 Troubleshooting
In this chapter, you will find suggestions and assistance for a few common dif-
ficulties.
9.1 PIN Handling
Depending on the configuration, a LANCOM with UMTS/HSPDA function and
an inserted data card tries to establish a connection to the Internet immedi-
ately after being switched on. For this purpose, the PIN saved in the configu-
ration of the device is transferred to the SIM card in the data card to enable
the connection to an UMTS/HSPDA or GPRS net.
As soon as an incorrect PIN is stored in the configuration, the device transmits
this invalid PIN to the SIM card. After three unsuccessful attempts, most cards
are automatically locked and can only be reinstated by entering an additional
number (depending on the provider PIN2 or PUK).
Whenever a device is set to automatically establish a connection to the Inter-
net, three attempts with an invalid PIN may be performed within a few sec-
onds without the user noticing. To prevent this, a LANCOM with the UMTS/
HSPDA function disables further attempts as soon as the device makes an
attempt to establish a connection to the Internet with an invalid PIN.
LANmonitor displays this condition with the error message 'The PIN is invalid':
To enable the connection to the Internet proceed as follows:
ቢ
Change the PIN in the UMTS/HSPDA/GPRS Profiles.
Configuration with
LANconfig The UMTS GPRS Profiles are located in LANconfig in the configuration
area 'Interfaces' on the register card 'WAN' on the button
UMTS/HSPDA/
GPRS Profiles.