
VHSI port specifications
15
VHSI port specifications
The standards compliant with each interface supported on the VHSI
port are listed in Table 1. The rest of this section describes the pin-outs
that are used to implement the electrical and signaling requirements of
each interface. A wiring diagram is also provided for each interface that
describes how interface pinouts are mapped to the VHSI port.
Table 1. Interface compatibility
Interface
Standard
Compatibility
V.24
CCITT V.24
Signaling
CCITT V.28
Electrical
CCITT X.21bis
Electrical and signaling
EIA RS-232-C
Electrical and signaling
ISO 2110
Connector type for the DCE side of a V.24 VHSI
Modem Cable
V.35
CCITT V.28
Some signals for electrical
CCITT V.35
Some signals for electrical and signaling
ISO 2593
Connector type for the DCE side of a V.35 VHSI
Modem Cable
EIA-530
RS-422
Electrical
RS-423
Electrical
ISO 2110
Connector type for the DCE side of a EIA-530 VHSI
Modem Cable
V.36/RS-449
CCITT V.10
Electrical
CCITT V.11
Electrical
RS-422
Electrical
RS-423
Electrical
ISO 4902
Connector type for the DCE side of a V.36/ RS-449
VHSI Modem Cable
X.21
CCITT X.21
Signaling
CCITT V.11
Electrical
CCITT X.27
Electrical
EIA RS-422-A
Electrical
ISO 4903
Connector type for the DCE side of an X.21 VHSI
Modem Cable