What is Soft-fax and Soft-modem?
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What device converts the signals between the ISDN and the PSTN networks?
What determines which of these two protocols to use?
What are TEIs?
What kind of cabling is used for a PRI?
A user on an ISPBX can use different D-Channel protocols to those in use by the public ISDN network connected to the ISPBX - true or false?
How many devices may be connected to a PRI?
Why can you not normally send data between users through the D channel?
What is Soft-fax and Soft-modem?
How the B and D channels share the line?
How Analogue fax and modem over ISDN?
What the B and D channels do?
What is the device inside an ISDN telephone that converts voice into digits?