RP Tricks » IP http://www.rptricks.com/blog Fun and Games with Microsoft Response Point Thu, 21 May 2009 16:55:25 +0000 http://wordpress.org/?v=2.8.4 en hourly 1 Dial a Response Point handset from a SIP phone http://www.rptricks.com/blog/index.php/2008/04/30/dialing-a-response-point-handset-directly-from-a-sip-phone/ http://www.rptricks.com/blog/index.php/2008/04/30/dialing-a-response-point-handset-directly-from-a-sip-phone/#comments Wed, 30 Apr 2008 21:03:07 +0000 jmlivingston http://www.rptricks.com/blog/?p=6 Under the covers of the Response Point system, the handsets utilize a standard protocol called SIP to communicate across the network with the base station. While Microsoft and the manufacturing vendors have included some proprietary extensions to preclude generic SIP handsets from connecting to the base station it is still possible to take one of these other generic units and dial directly into a Response Point handset. For todays scenario I’ll use a Snom 360 handset as I not only have one available in my lab but because it also supports IP-based dialing from it’s web interface which is much simpler to do than trying to type an IP address into the number pad on a telephone.

Scenario:

A Syspine Response Point system configured with two IP Phone 310 handsets, our target handsets is setup as extension 102. Since there’s not a way to get the IP address of the phone directly off of it’s LCD display I just looked it up on my router, a Kentrox Q2300 which is acting as my DHCP server. By comparing the MAC address on the back of the phone in the list of DHCP leases on the router we see that the phone we want to dial has an IP address of 172.16.83.104.

Now that we know the extension number and IP address of our target, we can browse to our Snom and make our call!

 

 

Notice that before the IP address I placed “102@” designating the extension which I was dialing into on the Syspine 310 handset. In the scenario we just did, this is optional; in fact any arbitrary number can be used or it can even be left out completely and the 310 will still ring. Adding the extension would be useful however when a target handset has multiple extensions on it and you want your call to be able to roll into the proper voice-mailbox if the call is not answered.

As part of working through this article I even moved the Snom to several different IP networks in my lab and it continued to work even across the router. This is significant as it offers up some openings from the typical Response Point requirement that the handsets must be on the same subnet as the base unit.

John

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