What are BRI and PRI? What are Channels?
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A fax call call might be designated as a generic analogue call or specifically as a fax call - true or false?
What channel does the end-to-end connection use?
What are SAPIs?
What is Soft-fax and Soft-modem?
When multiple users on an ISPBX are making calls, how many users does the public ISDN network see?
Why can you not normally send data between users through the D channel?
How users are connected to a public ISDN through an ISPBX?
What is the significance of the TEI in B channel communication?
What item of equipment would be required to connect a modem to ISDN? A terminal adapter.
A device is configured for automatic TEI. What is its address immediately after being switched on - before it starts communicating with the network?
Number of devices equals number of subscriber numbers required for MSN - true or false?
What is the essential difference between ISDN and the ordinary telephone system (PSTN)?