Huawei Quidway AR 28 Series Installation Manual page 54

Quidway AR 28 Series Routers Installation Manual
Attribute
Service
Protocol
Synchronous/asynchronous mode
Synchronous/Asynchronous serial interface can work in either synchronous or
asynchronous mode. Different signaling standards are supported in these two modes.
V.35, V.24 (RS232), RS449, X.21, and EIA-530 support synchronous operating mode,
while V.24 (RS232) supports asynchronous operating mode. The maximum
transmission distance and baud rate of the signal vary with the operating mode.
Table 4-10 Transmission rate and transmission distance of V.24 (RS232)/V.35 cable
Baud rate (bps)
2400
4800
9600
19200
38400
64000
115200
––
Synchronous
DDN leased line backup
Terminal access
Backup
PPP
MP
LAPB
HDLC
X.25
Frame Relay
V.24 (RS232)
Maximum
transmission
distance (m)
60
60
30
30
20
20
10
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Huawei Technologies Proprietary
Chapter 4 Installation of the Router
Description
Baud rate
(bps)
2400
4800
9600
19200
38400
56000
64000
2048000
4-14
Asynchronous
Modem dialup
Backup
Asynchronous lease
line
terminal access
PPP
SLIP
MP
V.35
Maximum transmission
distance (m)
1250
625
312
156
78
60
50
30