A fax machine is configured to filter for analogue calls - will it accept G3 Fax calls? No, it will only accept those calls whose call type is specifically 'Generic Analogue'.
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How to vary the the amount of bandwidth you have available to you?
How the structures of BRI and PRI compare
How configuration errors in the ISPBX can prevent successful connections?
Bearer Capabilities - What are they?
What do the layers look like?
What are BRI and PRI? What are Channels?
What are SPIDs?
What is LAP-D?
What protocols are used?
What is Information Field Structure?
Do you know what is the difference between internet and isdn and is both are same or is there any specific difference?
Why use ISDN?
How ISDN and analogue networks interact?
What item of equipment would be required to connect a modem to ISDN? A terminal adapter.
Explain the call flow in nss and what is sri signal?