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The equipment type connecting sync/async serial, which is sync/async,
DTE/DCE
Access equipment requires signal standard, baud rate and sync clock.
Sync/async serial usually accesses external Modem or TA (terminal
adapter) as dialup interface. Sync serial has two modes, which is DTE
and DCE. Router is used as DTE equipment.
DTE and DCE equipment:
Equipment type
DTE
DCE
Rate and transmission distance:
Sync/async serial supports different signal standards and baud rate in
different working modes. Choose cables according to prevailing actual
conditions. Signal maximum transmission distance and BR should be
relevant to cables.
V.24 cable rate and transmission distance:
BR (bps)
Max. transmission distance (m)
2400
60
4800
60
9600
30
19200
30
38400
20
64000
20
115200
10
V.35 cable rate and transmission distance:
BR (bps)
2400
4800
9600
19200
38400
56000
64000
2048000
When adopting EIA/TIA-232 cable, BR rate should not be over 64Kbps.
Interface type
Pin type
Hole type
Max. transmission distance (m)
1250
625
312
156
78
60
50
30
31 SIGNAMAX LLC • www.signamax.eu
Typical equipment
PC
Router
MODEM
Multiplexer
CSU/DSU
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