Question about Adtran ISU 512 Multiplexer
I am unable to dial from the front panel.. I have a Tandberg VTC suite. I select option 4 dial, key in the number hit enter and it goes right back to the initial screen showing line 1-3 ready and 4 down. Additionally, I can call VTC ISDN numbers local in the Mid East area and Europe but can not call into any commercial or ISDN line in the US. Any suggestions? thank you
You need to check in the 'network options', 'dial line', #4 'dial options' to see if you have the front panel function enabled.
As for not being able to call ISDN in the US, that is a possible routing or long distance service issue you need to have looked at by your service provider.
Posted on Jan 06, 2009
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Posted on Jan 02, 2017
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