1 OVERVIEW
3021M100-002
1-7
* must be used in conjunction with ISDN BRI S/T
Legend for Table 1-1:
OK The I/O in this slot can be used without special requirements.
BEST Use these slots first for the I/O card specified. Filling these slots with the speci-
fied I/O cards means that a Serial Expansion Module (SEM) is not required.
OK with SEM SEM is required when filling the slot with the specified I/O card.
NO The specified I/O card cannot be used in these slots.
WARNING:
Please refer to Table 18-3 for other I/O card restrictions when using the
DIM I/O card.
Table 1-1 Recommended Configurations
I/O Card
Maximum
Speed
(per port)
Max. cards of this
type
Slot
1
Slot
2
Slot
3
Slot
4
Slot
5
Slot
6
Slot
7
Slot
8
Multi EIA-232/V.24 128 Kbps 7 OK OK with SEM
Universal I/O 2.048Mbps 6 OK OK with SEM
EIA-232/V.24 128 Kbps 8 OK OK with SEM
V.35H or V.35EU 2.048 Mbps 8 OK OK with SEM
X.21 2.048 Mbps 8 OK OK with SEM
56K/64K
DSU/CSU
56K/64K bps 8 OK OK with SEM
V.34 Modem 28.8 Kbps 7 OK OK with SEM
Analog Voice I/O
(with Ring Generator)
n/a 7 OK BEST
Dual Analog Voice (DAV I/O)
(with Ring Generator)
n/a 4 OK BEST
10BaseT
Ethernet
10 Mbps 2 OK NO
OK
with
SEM
NO
Fast Ethernet
autosense
10 or
100 Mbps
1 OK
Token Ring 4 or 16 Mbps 1 OK
ATM
1.544 Mbps
or
2.048 Mbps
2 OK NO
ISDN BRI U-
ISDN BRI S/T
144 Kbps 7 OK BEST
DDVC* n/a 3* OK BEST
BRI-DV 144 Kbps 7 OK BEST
T1/E1 CSU/DSU
1.544 Mbps
or
2.048 Mbps
8 OK OK with SEM
DIM
1.544 Mbps
or
2.048 Mbps
channelized voice/data: 1
unchannelized data: 3
Refer to DIM slot restrictions in Chapter 18.