SIP intercom for doors
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 Greetings. A friend of mine has 2 doors that have old intercom speakers that are connected to their PBX. When a guest presses the button, it dials an extension and they can talk. This is on a Panasonic PBX. They are migrating to hosted PBX and were looking at Algo SIP intercom units. I have never installed these and can't give any advice to him. Does anyone have any feedback on Algo or a recommendation on SIP intercom units. They are in the process of installing a new CAT6 to each door in preparation. Thanks 
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 Several of the Viking Call boxes should work... 
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 @gjacobse Those look nice and rugged. Thanks. 
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 @brandon220 Algo 8028 ... Work great - have installed several of them - great units. 
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 @brandon220 The algo 8028 not only allows you to communicate but to also remotely trigger the mag lock from the phone connection. 
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 @krzykat Thanks. 
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 Algo is a decent brand. I have used it before. Same for Viking. Either will have a solid product for your needs. But if you have a current box, you may not need to do anything special. How does the current box call? Standard POTS? Just get a Grandstream HT802 (because you have 2 units). Your current units are just punched down on a 66 block. reterminate them to RJ11 and plug them in to the HT802 line 1 and 2. Program an extension for each port, then set the HT to auto-dial a ring group or whatever. Unless the current thing actually dials an extension instead of just opening a line. 
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 @gjacobse second on Viking we use and resell them 



