Telos Zephyr Xstream User Manual page 301

13.6.5 Ethernet Related Difficulties
Condition: Unable to Telnet into the Xstream
Is the Green link LED on the Ethernet jack lit? Is the "Link" LED on the hub or other equipment
lit?
If there is no link light, the Ethernet link is not up. The most likely cause is a bad cable.
Other possible causes are a possible failure of the Xstream's Ethernet port or a problem
with the hub (or other device at the far end).
If you are connecting directly without an Ethernet hub, note that a special cable must be
used (See Appendix 9 ‐ Modular Cable Reference)
The Xstream's command line interface is on the default Telnet port (Port 23). Verify
your Telnet client is using this port.
Does the Amber activity LED on the Ethernet illuminate occasionally?
Whenever there is an active Ethernet link, you should see occasional activity of this LED.
Lack of activity may indicate a problem with the Xstream. Reboot the Xstream and re‐
check
Does the Xstream have an IP address entered? Does the Telnet computer have an IP address?
Are they in the same IP range?
The Xstream uses IP (Internet Protocol). IP addresses are required. Each device on the
network must have unique IP address.
Can you "Ping" the Xstream from the Telnet computer?
If you cannot "Ping" the Xstream there is most definitely a problem. Make sure the
Xstream's IP address is entered correctly. Try to "Ping" some other computer from the
Telnet computer to isolate the problem.
If you can "Ping" the Xstream, but you cannot Telnet into it, there may be a firewall
between the two devices. Your network administrator should be able to open the
firewall for Telnet access between these two IP addresses. (Note Telnet is port 23).
Condition: Unable to connect to a distant site using IP (i.e. to receive audio)
Can you "Ping" or "Telnet" to the distant Xstream from another computer on your local network?
If not see the condition above.
Can you ping the streaming machine from the Xstream?
Use the "ipping" command from Telnet or the serial port (note "result = ‐1" means
failed while "result = 0" means success).
Is the distant Xstream configured for Ethernet operation?
Is/Are the appropriate Port(s) open on the firewall (or configured via port forwarding)? SIP
operation requires 2 ports.
Section 13: Deep Tech Information and Troubleshooting
USER'S MANUAL
289