It sounds like you might have a Norstar Modular ICS with 1 trunk module and a station module. In that case, yes, you could upgrade that with more stations.
You'll need to look in the cabinet and tell us if you have a card with ports in it that your trunk mod and stn mod plug into. How many ports are on the card? It will be either 2 or 6 ports.
If you have ports open on that card, you will be able to purchase another 0X16 (lines /stations) to connect to it. Each station module is capable of adding 16 stations. MRoberts
mroberts@americaii.com
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