Quick Start: How To Connect To The Bvm; Frequently Asked Questions; General Faqs - DPS Telecom BVM 48 User Manual

48
15

Frequently Asked Questions

Here are answers to some common questions from BVM 48 users. The latest FAQs can be found on
the BVM 48 support web page, http://www.dpstele.com.
If you have a question about the BVM 48, please call us at (559) 454-1600 or e-mail us at
support@dpstele.com
15.1

General FAQs

Q. How do I telnet to the BVM 48?
A. You must use Port 2002 to connect to the BVM 48. 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 BVM 48 and Port 2002. For example, to connect to the BVM 48 using the standard Windows
Telnet client, click Start, click Run, and type "telnet <BVM 48 IP address> 2002."
Q. How do I connect my BVM 48 to the LAN?
A. To connect your BVM 48 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 BVM 48 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 BVM 48.
Q. The LAN link LED is green on my BVM 48, 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 BVM 48. Ordering TTL points for
your BVM 48 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 BVM 48 will declare an alarm in the absence of the active-high signal, creating the practical