Extron electronics XTP CrossPoint 3200, Руководство пользователя

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XTP CrossPoint Series • Programming Guide 78
Establishing a Connection
Establish a network connection to an XTP CrossPoint Series matrix switcher as follows:
1. Open a TCP socket to port 23 using the IP address of the matrix switcher.
NOTE: If the local system administrators have not changed the value, the
factory-specified default, 192.168.254.254, is the correct value for this field.
The matrix switcher responds with a copyright message including the date, the name of
the product, firmware version, part number, and the current date and time.
NOTES:
• If the matrix switcher is not password-protected, the device is ready to accept
SIS commands immediately after it sends the copyright message.
•
If the matrix switcher
is
password-protected, a
password
prompt appears
below the copyright message.
2. If the matrix switcher is password-protected, enter the appropriate administrator or user
password.
If the password is accepted, the matrix switcher responds with
Login User
or
Login
Administrator
.
If the password is not accepted, the
Password
prompt reappears.
Connection Timeouts
The Ethernet link times out after a designated period of time of no communications. By
default, this timeout value is set to five minutes but the value can be changed (see the
Configure port timeout
SIS commands on page 120).
NOTE: Extron recommends leaving the default timeout at 5 minutes and periodically
issuing the Query (
Q
) command to keep the connection active. If there are long idle
periods, Extron recommends disconnecting the socket and reopening the connection
when another command must be sent.
Number of Connections
An XTP CrossPoint Series matrix switcher can have up to 200 simultaneous TCP
connections, including all http sockets and telnet connections. When the connection limit
is reached, the matrix switcher accepts no new connections until some have been closed.
No error message or indication is given that the connection limit has been reached. To
maximize performance of an IP Link device, the number of connections should stay low and
unnecessary open sockets should be closed.
Using Verbose Mode
Telnet connections to an XTP CrossPoint Series matrix switcher can be used to monitor
for changes that occur on the matrix switcher, such as front panel operations and SIS
commands from other telnet sockets or a serial port. For a telnet session to receive change
notices from the matrix switcher, the telnet session must be in verbose mode 1 or 3 (see
the
Verbose mode definitions on page 118). In verbose mode 1 and 3, the telnet socket
reports changes in messages that resemble SIS command responses.