NEC NDA-24305 Manuale Utente
CHAPTER 5
NDA-24305
Page 72
Revision 1.0
Revision 1.0
DATA COMMUNICATIONS-PRI
D-121
DATA COMMUNICATIONS-PRI
1. General Description
This feature enables data communication between two systems, through PRI over ISDN (Digital Line Link). The
ISDN link can be accessed through various connections.
ISDN link can be accessed through various connections.
Note:
Unrestricted Data:
• The
following
communication
speeds
are
supported:
Asynchronous Synchronous
50-9600 bps
50-9600 bps
2.4K, 4.8K, 9.6K, and 48K bps
2. Operating Procedure
1.
Modem-to-Modem.
illustrates a typical Modem-to-Modem connection.)
Figure 5-1 Typical Modem-to-Modem Connection
(a) An analog telephone user with a modem dials a remote extension which also has a modem.
(b) The remote modem rings and is manually or automatically answered.
(c) The remote modem returns answer tone (modem tone).
(d) Both modems exchange carrier signals.
(e) A data communications path is established.
16LC
DTE
PRI
16LC
PRI
Analog
Station
Sync. or Async.
Modem
DTE
Analog
Station
Sync. or Async.
Modem
PBX
PBX
ISDN