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NEAX2400 IPX ISDN Features and Specifications
NDA-24311, Issue 1
Page 89
Modem Pooling - PRI M-74
Service Conditions
1. Up to eight Modem Pool Groups can be assigned: eight bothway, four incoming, four outgoing, or any
combination thereof.
2. One modem in the group is selected by the DTE at the time of connection.
3. LEAST CALL ROUTING - 3/6-DIGIT [L-6] can be used for optimization of long distance data calls.
4. Incoming MODEM POOLING capabilities are also provided via DIT, DID, or the Attendant.
5. Modems must be compatible.
6. NEC modems tested and certified to work with the MODEM POOLING - PRI feature are:
NEC 212 AE 300/1200 bps
NEC DSP2420 300/1200 bps
NEC DATAX SP2424 AA
Note: Consult NEC for other types of modems.
7. Modems can be selected by the user.
8. MODEM POOLING - PRI is also used for digital-to-analog/analog- to-digital translation. Refer to
INTRA MODEM POOLING [I-15].
9. Acoustically Coupled Modems, Limited Distance Modems, Line Drivers, and DSUs cannot be attached
to the Modem Pooling card.
10. Consideration should be given to the modems’ capability to recognize a distinctive ringing pattern when
defining incoming trunk ringing.
11. Speed Select via pin 24 on the EIA RS-232C connector is not implemented.
12. Auto Dial or Intelligent Modems must be strapped for manual operation to work on the Modem Pooling
card.