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Establishing a Connection

Establish a network connection to an XTP II CrossPoint switcher as follows:

1. Open a TCP socket to port 23 using the IP address of the 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 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 switcher is not password-protected, the device is ready to accept SIS

commands immediately after it sends the copyright message.

• If the switcher is password-protected, a password prompt appears below the

2. If the switcher is password-protected, enter the appropriate administrator or user

password.

If the password is accepted, the 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 118).

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 II CrossPoint switcher can have up to 200 simultaneous TCP connections, including

all http sockets and telnet connections. When the connection limit is reached, the 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 II CrossPoint switcher can be used to monitor for changes

that occur on the 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

switcher, the telnet session must be in verbose mode 1 or 3 (see the Verbose Mode

definitions on page 116). In verbose mode 1 and 3, the telnet socket reports changes in

messages that resemble SIS command responses.

XTP II CrossPoint 1600, 3200, and 6400 Switchers • Programming Guide 78

Extron electronics XTP II CrossPoint 6400 User Manual

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