NEAX2400 IPX ISDN Features and Specifications
Page 52 NDA-24311, Issue 1
D-121 Data Communications - PRI
D-121 Data Communications - PRI
General Description
This feature enables data communication between two NEAX2400 IPX, through PRI over Digital Line Link
(ISDN). The ISDN link can be accessed through various connections.
Operating Procedure
Modem-to-Modem
The following figure illustrates a typical Modem-to-Modem connection.
Modem-to-Modem Connection
1. An analog telephone user with a modem dials a remote extensio n, which also has a modem.
2. The remote modem rings and is manually or automatically answered.
3. The remote modem returns answer tone (modem tone).
4. Both modems exchange carrier signals.
5. A data communications path is established.
ISDN
Sync. or Async.
Modem
Analog
Station
DTE 16LC PRI
NEAX2400 IPX
Sync. or Async.
Modem
Analog
Station
DTE
16LC
PRI
NEAX2400 IPX