The NMS utility ctatest will allow you to perform some testing with NMS without involving TeleFlow at all. Refer to the "Natural Access Developers Reference Manual"(p/n = 9000-6423-26) for detailed documentation on the ctatest utility. Don't attempt to use ctatest while the TeleFlow Server service is running.

That said, I am going to guess that you don't have isdncta running. For both TeleFlow and ctatest, isdncta starts and monitors the D-Channel(s) on your trunk(s). isdncta is started on the command line.

You need to run one instance of ISDNCTA for every D-channel that exists in your configuration(one for each trunk), as follows:
ISDNCTA -b {board#} -a {NAI} -o {variant} -c {country}

The details for what to supply in the command string are:
{board#} = NMS board number (zero-based)
{NAI} = Network Access Identifier or TRUNK number (zero-based)
{variant} = protocol variant, by number
{country} = country, by number
Use ISDNCTA -? to see a list of variant and country numbers.

Example: Start the D-channel on board 0 (the first board), NAI 0 (the first trunk) using the National ISDN 2 variant (-o 20) for USA (-c 1):
ISDNCTA -b 0 -a 0 -o 20 -c 1


When you are interested in testing your configuration with TeleFlow, I would highly recommend using the AnswerTest application. It has a minimal number of steps to answer a call and play messages, and as such, there is very little to go wrong in the application. AnswerTest should be available in your TeleFlow installed directory (By default, this will be here: C:\Program Files\TeleFlow\Applications\AnswerTest\AnswerTest.TAP)

Since you probably would prefer to have a system that doesn't need to remain logged in all the times, you can use a little "trick" to make that command-line utility run as a service.

Download the service wrapper utilities from the following link: TeleFlow service utilities

You can unzip them anywhere you like, although the instructions for the service wrapper assume "C:\Program Files\TeleFlow"(which will already be in the Windows path). The instructions are in the text file included in the zip: "TeleFlow_as_a_Service.txt"

That file also has some general pointers for running TeleFlow as a service, including how to get NMS to start with Windows.