Hello--
I've been asked an interesting question, and I'm too ignorant to answer it authoritatively (yet). Can anyone help me?
Question: If I'm going to implement a somewhat small (10-80) phone system, and I have a choice of using VOIP phoneset (like SNOM or Grandstream or Cisco, etc), vs. cheap analog touch-tone phones, exactly what features will I kiss goodbye if I use the cheap analogs?
Some people swear by their SIP phones. I however do not have the luxury of being able to purchase any right now, but I do have a TDM400P with a fairly nice NT Vista 150 telephone plugged into it, and I have had complements on the quality of the sound.
I can't directly answer your question about which features the SIP phones will give you, but that should all be easily found with a little googling about the various phones.
Honestly, I haven't missed using an analog handset at all, but then again, I'm a single entity in a home/test environment, and not one of 50 people in a work environment, so YMMV. I'd suggest getting a list of features you NEED to have, and then see if you can get away with the cheap phones. The other thing you are going to have to consider is using a couple of channel banks and a TE410 since you are using perhaps upwards of 80 phones, which you will never get with the digium FXS cards [you'd be looking closer to around 8-16, depending on MB, free IRQ's, BIOS, etc.. etc.. (from what I have read on the mailing lists anyways)]
Just my .02 CDN.
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