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What do I get with ISDN30e | BT Business
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What do I get with ISDN30e (ETSI)?

What is ETSI?

What signalling type does ISDN30e use?

What does ISDN30e terminate on?

Is my ISDN30e circuit Balanced or Unbalanced? My PBX/switch engineer needs to know.

How many DDI ranges can I have on my ISDN30e circuit?

How can I divert an individual DDI number on my ISDN30e line?

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