CHAPTER 9: Data-Channel Configuration

Table 9-6. CCM and 6-Channel CEM (MX215C only)

Local Sync Channel Interface Configured to DTE

Multiserver

 

 

 

 

DTE

 

 

 

 

 

 

 

 

Constant

Controlled

 

 

 

 

Pin

I/O

Carrier Mode

Carrier Mode

Pin

 

I/O

Signal

 

 

 

 

 

 

 

 

 

4

I

Off-to-On transition

 

On-to-Off transition

4

 

O

RTS

 

 

raises CTS.

 

forces CTS off

 

 

 

 

 

 

 

 

 

 

 

 

5

O

Set on after RTS goes on. Set off when RTS goes off.

5

 

I

CTS

 

 

 

 

 

 

 

 

 

8

O

Forced ON.

 

Set on when Multiserver

8

 

I

CD

 

 

 

 

has output data. Set off

 

 

 

 

 

 

 

 

when all data delivered.

 

 

 

 

 

 

 

 

 

 

 

 

22

O

2 seconds on/4 seconds off when start ring frame received

22

 

I

RI

 

 

from remote unit. It is held off when stop ring frame is

 

 

 

 

 

 

received from remote unit or when DTR is on

 

 

 

 

 

 

(Bell 103 emulation).

 

 

 

 

 

 

 

 

 

 

 

 

 

20

I

Send changed to remote unit as detected. DTR on holds

20

 

O

DTR

 

 

RI off.

 

 

 

 

 

 

 

 

 

 

 

 

 

6

O

Change as dictated by remote unit.

6

 

I

DSR

 

 

 

 

 

 

 

 

25

I

Send changes to remote unit as detected.

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

 

 

 

 

 

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Black Box 5000 manual Dte
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