What are TEIs?
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What are SPIDs?
What happens when a call is set up?
What is the significance of the TEI in B channel communication?
What the B and D channels do?
How Analogue fax and modem over ISDN?
What are these types of NT1 known as?
What filters are used when implementing MSN?
What channel do the call management messages use?
How configuration errors in the ISPBX can prevent successful connections?
Where else is rate adaptation employed?
What do the layers look like?
How can I get more information?