![](http://pdfasset.owneriq.net/f/91/f91ce67a-0c33-4e04-a523-329140325d9b/f91ce67a-0c33-4e04-a523-329140325d9b-bg21.png)
COMSPHERE 392xPlus Modems
2-8 November 1996 3920-A2-GN31-30
3000 SERIES
CARRIER
MODEL 3921
Plus
MULTIPORT
MODEM
LATCH
CIRCUIT CARD
GUIDES
495-14708
SDU
MODEL 3921
Plus
SINGLEPORT
MODEM
LATCH
CIRCUIT CARD
GUIDES
SDU
3000 SERIES
CARRIER
Figure 2-3. Installing the Model 3921
Plus
Modem