Instruction/ maintenance manual of the product AR300 series Allied Telesis
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C613-16030-00 REV B www .alliedtelesis.com How T o | Intr oduction Ideally , setting up an ISDN connection is v er y much a straightf orward process: z Connect the r outer to the ISDN network interface. z Configure ISDN call definitions on the router .
2 Ho w to tr oub leshoot ISDN Step 1: Is the r outer communicating with the ISDN netw ork at the signalling le vel? When the r outer is connected to the ISDN networ k, eith er by plugg ing it into an .
3 If the interface is not activated, the re ason could be one of the f ollowing: 1. The interface has been put into NT mode . O n t h e AT - A R 0 4 1 a n d AT - A R 0 4 2 m u l t i - B R I N S M modules it is possible to put the ISDN interface(s) into NT mode so that they can emulate a network switch interface.
4 3. The cable connecting the r outer to the ISDN network or NTI is faulty . T r y a differ ent cable . 4. There is a fault in the ISDN network or the NT1. If options 1, 2 and 3 do not show any faults on the router , then contact y our ISDN network pr ovider and see if they can fi nd the fault on their network.
5 If the LAPD is not alive, the reason could be one of the f ollowing: 1. The TEI mode has been set incorr ectly . On a Basic Rate interface, the TEI mode ought to be automatic , so that the router does not mandate a TEI value to the switch, but will automatically accept whatev er v alue is assigned by the sw itch.
6 When it comes to diagnosing an ISDN connection, the tw o most impor tant columns in this table are Duration and Cause. The Duration column The Duration column tells y ou immediately whet her or not the call ev er connected. If the entr y in this column is CLEARED , then the call ne ver connected.
7 Also , a call that is closed due to P AP/CHAP au thentication failure has a cause code of 16 because the call work ed fine at the ISDN lev el, a nd was closed due to an indication from the PPP la yer .
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If you already are a holder of Allied Telesis AR300 series, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Allied Telesis AR300 series.
However, one of the most important roles played by the user manual is to help in solving problems with Allied Telesis AR300 series. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Allied Telesis AR300 series along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
