[acropolite (Phil)]

Eric, analog/digital phones are often connected through network cabling, if the phones are VOIP handsets the network conection will be clearly labelled on the phone and will be an RJ45 (8 pin), if it's telephone the phone connection will be the slightly narrower RJ12 (6 pin) plus.

IP networked phones will be patched at the rack to a switch whereas any non IP telephony will usually be patched to another strip which has a tie cable back to the PABX.

Some additional information, the 2033 lists in it's specs "802.3af standards-compliant Power over Ethernet or local AC power option via Power over Ethernet Module1" which in effect means it will safely accept the usual 48 V feed from a POE switch.

I would be unusual for your conference room to be equipped without data capability, I've not encountered a conference room without data in my day to day travels, if you can find a network connection and that connection has access to your phone system then you're most of the way there. FWIW IP phones and the associated PABX programming can in some cases be simple, in others they can be an absolute pain.