Caller id compatible for smooth communication: – When an outside call is being received, the phone number is displayed. This enable you to check who is calling before picking up the handset. Caller information for the last 30 callers is also logged in the caller list. 2. 30 Call Logs Retained: – The retention of 30 call logs makes it convenient to redial or check the call history. 3. Redial the latest 5 numbers: – The latest 5 number in the call log can be redialled. 4. Caller Id:- Yes | Caller id Memory:- 30 Numbers | Redial :- 5 numbers | Speakerphone:- No 5. Handset Volume Control:- Fixed | Wall Mountable:- Yes | Battery:- No Need