Behind-The-Scenes Connection Information

The emsCharts Mobile server connects over standard web ports 80 (non-secure) and 443 (secure) via http and https respectively. These are ports that should be normally open, however some IT agencies may restrict staff in an attempt to block non-work related web activity.

IT staff should be directed to allow *.emscharts.com (all emsCharts domain addresses) or at the very least comm.emscharts.com and www.emscharts.com.

NOTE: The emsCharts Mobile CAD connection does NOT require (any longer) port 5051 to proxy1.emscharts.com to be opened since the CAD feed operates independently.

Mobile checks for the internet connection when launching the application and when doing web-related activities such as importing a patient or uploading. Logging-in accesses the local database and does not make a web connection (unless the checkbox is selected which attempts to authenticate against the live servers)

Upon launching, Mobile attempts to do the following:

1. Detect if http://www.emscharts.com/pub/cfprobe.cfm is reachable via a standard web connection within 12 seconds.
2. Tries the same thing again
3. If succeeds above, score is 100, otherwise 0
4. Attempts DNS Lookup of www.emscharts.com. If succeeds adds 10
5. Tries a web request of www.google.com & www.microsoft.com within 8 second. If succeeds, adds 1
6. Using default Windows functionality, if no network interface registers as available, returns
   • No network available/connected on your computer. Check plug or verify wireless is on.
7. If score is equal to 0 or score = 10 then no outside access was achieved so returns:
   • Cannot access public internet / outside world. Contact your network administrator.
8. If score is between 1 and 9, then the Google &b; Microsoft succeeded, so returns
   • Public internet OK, however DNS problem reaching emsCharts.com. Please check your DNS Servers and contact your network administrator.
9. If score is between 10 and 100, exclusive, succeeded in contacting other sites and emsCharts DNS, so displays:
   • Public internet OK and emsCharts DNS Lookup OK. Possibly check firewall settings otherwise contact emsCharts.

To entable Network Interface debugging, shut down Mobile, open emsChartsMobile.exe.config and add the line:

<add key="LogDebug" value="1"/>

Under the

<AppSettings>

section, then relaunch.

If the above descriptions do not assist in solving the issue and Stage 2 above is successful, emsCharts would be happy to start a remote session with the Firewall/Internet Security/Network Administrator contact at the agency. We can assist them in what to check at a network level including routers, proxies, etc.