Frequently Asked Questions; General Faqs - DPS Telecom CellVoice 16 User Manual

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Frequently Asked Questions

Here are answers to some common questions from Cell16 users. The latest FAQs can be found on the Cell16
support web page, http://www.dpstele.com.
If you have a question about the Cell16 , please call us at (559) 454-1600 or e-mail us at support@dpstele.com.
17.1

General FAQs

Q. How do I telnet to the Cell16 ?
A. You must use Port 2002 to connect to the Cell16 . Configure your Telnet client to connect using TCP/IP (not
"Telnet," or any other port options). For connection information, enter the IP address of the Cell16 and Port
2002. For example, to connect to the Cell16 using the standard Windows Telnet client, click Start, click Run,
and type "telnet <Cell16 IP address> 2002."
Q. How do I connect my Cell16 to the LAN?
A. To connect your Cell16 to your LAN, you need to configure the unit IP address, the subnet mask and the default
gateway. A sample configuration could look like this:
Unit Address: 192.168.1.100
subnet mask: 255.255.255.0
Default Gateway: 192.168.1.1
Save your changes by writing to NVRAM and reboot. Any change to the unit's IP configuration requires a reboot.
Q. When I connect to the Cell16 through the craft port on the front panel it either doesn't work right or it
doesn't work at all. What's going on?
A. Make sure your using the right COM port settings. Your COM port settings should read:
Bits per second: 9600 (9600 baud)
Data bits: 8
Parity: None
Stop bits: 1
Flow control: None
Important! Flow control must be set to none. Flow control normally defaults to hardware in most terminal
programs, and this will not work correctly with the Cell16 .
Q. The LAN link LED is green on my Cell16 , but I can't poll it from my T/Mon.
A. Some routers will not forward packets to an IP address until the MAC address of the destination device has
been registered on the router's Address Resolution Protocol (ARP) table. Enter the IP address of your gateway
and your T/Mon system to the ARP table.
Q. What characteristics of an alarm point can be configured through software? For instance, can point 4
be used to sense an active-low signal, or point 5 to sense a level or an edge?
A. The unit's standard configuration is for all alarm points to be level-sensed. You cannot use configuration
software to convert alarm points to TTL (edge-sensed) operation. TTL alarm points are a hardware option that
must be specified when you order your Cell16 . Ordering TTL points for your Cell16 does not add to the cost of
the unit. What you can do with the configuration software is change any alarm point from "Normal" to "Reversed"
operation. Switching to Reversed operation has different effects, depending on the kind of input connected to the
alarm point:
· If the alarm input generates an active-high signal, switching to Reversed operation means the Cell16 will
declare an alarm in the absence of the active-high signal, creating the practical equivalent of an active-low
alarm.
· If the alarm input generates an active-low signal, switching to Reversed operation means the Cell16 will
declare an alarm in the absence of the active-low signal, creating the practical equivalent of an active-high
alarm.
· If the alarm input is normally open, switching to Reversed operation converts it to a normally closed alarm