DrayTek UK Users' Community Forum

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ISDN only

  • sim
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04 Oct 2011 01:14 #69581 by sim
ISDN only was created by sim
We currently have a LG GDK-16 ISDN PBX box which has just gone bang. Will either of the IP PBX boxes work just routing calls to and from the ISDN ports or do you have to use a SIP trunk ?.
Ideally I would like to get our ISDN lines working again quickly and have the option of adding a SIP Trunk at a later date.

Simon

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  • jason@espprojects.co.uk
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14 Oct 2011 12:29 #69689 by jason@espprojects.co.uk
Replied by jason@espprojects.co.uk on topic Re: ISDN only
Hi Simon,

You've probably got an answer from elsewhere already but this config is exactly as we use them - connected to ISDN only as many of our clients don't have the quality of Internet Conenction required for SIP.

Jason

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22 Oct 2011 03:49 #69764 by asimm.it
Replied by asimm.it on topic Re: ISDN only
Just a quick note that both of the draytek ippbx models only support BRI (ISDN2e) and not PRI (ISDN30) ISDN circuits.

Make sure you have the right ISDN lines first before implementing

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