atcomsystems.ca/forum Forums VOIP Phones & IP PBX VoIP & Cloud Phones, Hosted PBX, General IP Phones Why don't IP phones have universal many DSS buttons like digital system phones?

It depends on th emodel of IP set. If it is behind a manufacturer PBX of the same type and model chances are you will have alomost all TDM functionality. Several guys have said their Tadiran,ESI, and NEC sets have them. I know the Comdial Vertical I Primo IP set does. Where I see the loss of features is in the SIP set offerings. Lot of the VoIP PBXs that are coming out today are very short in the feature list department. Nothing like telling the customer they have to hit feat. button *33#455 to transfer or conference.