- Call Waiting
- Three-way Calling (Conference)
- On-hook Dialing
- Call Park
- Call Pick-up
- Call Log
- Phone Book
- Date and Time
- Call Duration
- Multiple Ring Tones
- Silence Suppression
- Voice Activity Detection
- Adaptive Jitter Buffer
- G.711a
- G.711u
- G.722
- G.726
- G.729ab