Data Communications-Pri; Figure 5-1 Typical Modem-To-Modem Connection - NEC NEAX 2400 IPX Programming Manual

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.
Note: Unrestricted Data:
• The following communication speeds are supported:
Asynchronous Synchronous
50-9600 bps
2. Operating Procedure
1. Modem-to-Modem.
(Figure 5-1 illustrates a typical Modem-to-Modem connection.)
Sync. or Async.
Modem
16LC
DTE
Analog
Station
(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.
CHAPTER 5
Page 72
Revision 1.0
2.4K, 4.8K, 9.6K, and 48K bps
PRI
PBX

Figure 5-1 Typical Modem-to-Modem Connection

NDA-24305
ISDN
PRI
PBX
Sync. or Async.
Modem
16LC
DTE
Analog
Station