IBM 3274 51C Maintenance Information page 99

OSU*
Host
370X
-
Modem
-
See paragra ph 5.1.1.
I . . -
Modem
OSU*
2701
Host
r - - -
2703
370X
Modem
t -
See paragraph 5.1.2.
L--
Modem
* AT&T Data Service Unit (OSU) or equivalent.
**AT&T Channel Service Unit (CSU) or equivalent.
. /
X.21
L -
OCTE
/
X.21 L
OCTE
/ '
. /
. /
. /
Note: Modem may be integrated, in which case EIA or V.35 interfaces are not present.
Figure 5-1 (Part 1 of 2). Communications Configuration
5-2
OOSA
SOLC
CSU**
3274·51C
HPCAI
CCA
X,21
X.21
SOLC
OCTE
3274·51C
HPCA
EIA or V.35
Modem
See Note
SOLC
3274·51C,52C
(W/O V.35)
CCA/HPCA
X.21
SOLC
X.21
3274·51 C, 52C
OCTE
CCA/HPCA
Modem
SOLC
3274·51C,52C
CCA/HPCA
ODSA
CSU**
SSC
3274·51C
CCA
EIA or V.35
Modem
Note 1
SSC
3274·51 C
CCA
Modem
SSC
3274·51C
CCA