I want a phone which will support a pause (since you cannot send this over IP if I understand correctly) after connect then sending the dtms tones for a password. Eg, implement the pause in the phone book somehow so it either senses a connection is made prior to sending the code (best case) or at least supports pausing a fixed period of time prior to sending the code. I see lots of people asking about this but never a good answer. Are there phones that will support this? I want to keep the cost low and I don't need many features other than a large phone book that can store the same conference call number with different codes per meeting as discrete phone book entries. By Large I mean a 100 or so.

Sorry if I have terms a bit garbled here. I'm new to IP phones.