What you have is an Internal modem running using the CMN01 resource and
a v.24 serial connector using the CMN02 resource.  The 2771 card is the
same as the 9771 card.

Usually the Internal modem is used for ECS activities and any other
async modem function you desire, from faxing to customer dial in.  This
is done on a shared resource basis, where the communication line for
faxing is varied off when you need to download PTFs and so-on.

The CMN02 resource is for the external modems and CSU/DSU (WAN)
connections.

It also looks like you have a pair of 2745 cards which offers 4 more
communication lines.  These can be used for 4 more external modems.

Best Regards

Fritz Hayes
Atwater Associates

<snip>
|This is what my hardware communication resources looks like:
| CMB01           284C  Operational           Combined function IOP
|   LIN01         2771  Operational           Comm Adapter
|     CMN01       2771  Operational           Comm Port
|     CMN02       2771  Operational           V.24 Port
| CMB02           2843  Operational           Combined function IOP
|   LIN02         2744  Operational           LAN Adapter
|     CMN03       2744  Operational           Token-Ring Port
|   LIN03         2745  Operational           Comm Adapter
|     CMN04       2745  Operational           Comm Port
|     CMN05       2745  Operational           Comm Port
| CMB03           2843  Operational           Combined function IOP
|   LIN04         2838  Operational           LAN Adapter
|     CMN06       2838  Operational           Ethernet Port
|   LIN05         2745  Operational           Comm Adapter
|     CMN07       2745  Operational           Comm Port
|     CMN08       2745  Operational           Comm Port




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