Device
Device
Device
Peer
AUX port
Rollover cable
RJ-45(crystal jack)-DB25
male converter
DB25F interface of the Modem
Connecting an Asynchronous Interface Module to a Terminal
The asynchronous cable with 1-to-8 crystal connectors converts the 68-pin connector of the asynchronous interface
into eight RJ-45 connectors, and connects to the DB25M interface of a terminal (for instance, dumb terminal) through
the RJ-45 (crystal jack)-DB25 female converter or to the DB9M interface through the RJ-45 (crystal jack)-DB9 female
converter.
If you use the asynchronous cable with 1-to-8 crystal jacks, you need to use a straight network cable to connect the
converter cable of the asynchronous interface module to the converter.
This mode applies to modules SIC-8A.
Table: Connecting the asynchronous interface module to a terminal.
Device
Cable 1
Cable 2
Cable 3
Peer
SIC-8A
Asynchronous
cable with 1-to-8
crystal connectors
RJ-45(crystal
jack)-DB25 female
converter
N/A
DB25M
interface
Terminal
(like a dumb
terminal)
RJ-45(crystal
jack)-DB9 female
converter
N/A
DB9M
interface
Asynchronous
cable with 1-to-8
crystal jacks
Straight-through
cable
RJ-45(crystal
jack)-DB25
female
converter
DB25M
interface
RJ-45(crystal
jack)-DB9
female
converter
DB9M
interface
Connecting a Synchronous Interface
V.24 Mode
The synchronous interface of the router line card working in V.24 DTE mode is connected to the peer working in V.24
DCE mode through V.24 DTE cables. While the synchronous interface working in V.24 DCE mode is connected to the
peer working in V.24 DTE mode through V.24 DCE cables.
This applies to the V.24 DTE/ V.24 DCE mode of line cards SIC-1HS.
Table : Connecting the synchronous interface of the router working in V.24 mode.
Device
Mode
Cable 1
Peer
The SIC-1HS and
V.24 DTE mode
V.24 DTE cables
V.24 Modem
