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How to interface a nurse call system via serial port to send messages to Cisco Callmanager Ver 8.03

Posted on 2014-10-04
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Last Modified: 2014-10-19
Currently we have a Nurse Call system that outputs messages to Ericsson freeset phones , the output string is the 'extension number' and the 'message' . the IT people have changed to Cisco 7925G IP phones and are phasing out the ericsson phones. My question is how can I interface the existing serial port to Callmanager. The format string is changeable  in the nurse call setup.
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Question by:TopTed
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Dr. Klahn earned 2000 total points
ID: 40361678
There is probably a commercial solution for this already written if you ask around in the medical IT community.  It has to be a common problem.  Perhaps one of the other experts can suggest a medical IT venue online to seek additional help.

If you have to roll a solution from scratch, my opinion is:

Get the Callmanager API specification.  This is freely available on the Cisco web site.

Write a Perl script to (a) talk to Callmanager over the network and (b) talk to the nurse call system via serial port.  The serial port APIs for Perl are already written and are freely available through the Perl Package Manager.

My guess is that this application is about a week of work for a moderately skilled Perl coder from ground zero to a finished and documented product.  40 hours at $100/hour = $4,000.  If you can buy a finished product cheaper than that it is sensible to buy it instead of developt it.

As far as the hardware goes, no significant horsepower is required and it could run in an extremely small stand-alone linux system or Windows thin client.

Once it's written, you can probably market it to other institutions with the same problem.
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Author Closing Comment

by:TopTed
ID: 40390836
Yes , I did find that it has been done before and they are helping me set it up.
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