Data Channels and Switching Configuration
NetRunner W
AN User’s Manual
5-11
Table 5-2. CCM and 6-Channel CEM
1
Local Sync Channel Interface
Configured to DTE
NetRunner
Constant Carrier
Controlled Carrier
DTE
Pin
I/O
Mode
Mode
Pin
I/O
Signal
4
I
Off
-to-
on
transition raises CTS.
On
-to-
off
transition
forces CTS off.
4
O
RTS
5
O
Set
on
after RTS goes
on
. Set
off
when RTS goes
off
.
5
I
CTS
8
O
Forced
on
Set
on
when unit has out-
put data. Set
off
when
all data delivered.
8
I
CD
22
O
2 Seconds
on
/4 seconds
off
when
start ring
frame re-
ceived from remote unit. It is held
off
when
stop ring
frame is received from remote unit or when DTR is
on
(Bell 103 emulation).
22
I
RI
20
I
Send changes to remote unit as detected. DTR
on
holds RI
off
.
20
O
DTR
6
O
Change as detected by remote unit.
6
I
DSR
25
I
Send changes as detected by remote unit.
25
O
Busy
11
I
Not used
Not used
11
O
Unassigned
15
O
Not affected by carrier mode.
15
I
Tx Clock
17
O
Not affected by carrier mode.
17
I
Rx Clock
18
I
Not affected by carrier mode.
18
O
External
Rx Clock
24
I
Not affected by carrier mode.
24
O
External
Tx Clock
Key:
I = Input
O = Output
1
5000E/6 and 5000E/6DMA sync/async module only
