something as trivial as caller-ID is "sorry, can't do that.

What are you talking about? True, a 20 year old system may not support CID but newer ones certainly do and can have every feature you can ask for. That's because they are a REAL telephone system, not a computer simulation of one. Upgrade to a new TDM system if you need something and be happy, don't create headaches with IP.

-Hal


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