Nortel 1010 用户指南
Chapter 5 Configuring the system 105
Nortel VPN Router Configuration — Basic Features
Asynchronous data over TCP
Asynchronous data over TCP (AOT) is a protocol that enables transport of
asynchronous data packets over a TCP/IP network. A TCP packet is de-capsulated
and the data is then forward to the synchronous driver to the asynchronous device
or host.
asynchronous data packets over a TCP/IP network. A TCP packet is de-capsulated
and the data is then forward to the synchronous driver to the asynchronous device
or host.
The Asynchronous protocol is used for communication of an alarm device with an
alarm host on a slow speed serial line. Unlike synchronous transmission,
asynchronous transmission does not use clocking signals to time the data
transmission. Instead, asynchronous transmission uses start and stop bits to
control the transmission. AOT is either a connection initiator or a listener, but it
cannot be both. The selection of service is through AOT configuration. Only a
single TCP connection is supported.
alarm host on a slow speed serial line. Unlike synchronous transmission,
asynchronous transmission does not use clocking signals to time the data
transmission. Instead, asynchronous transmission uses start and stop bits to
control the transmission. AOT is either a connection initiator or a listener, but it
cannot be both. The selection of service is through AOT configuration. Only a
single TCP connection is supported.
To enable asynchronous data over TCP/IP through the GUI:
1
Go to Services > AoT. The default is disabled.
Figure 16 Asynchronous data over TCP
2
Check to enable asynchronous over TCP/IP communications. The default is
disabled.
disabled.