سانترال تحت شبکه زایکو CooVox U20-A4

3way Calling, Auto Call Recording, Blacklist, Call Back, Call Detailed Records (CDR, Call Forward, Call Parking, Call Pickup, Call Queue, Call Spy, Call Transfer, Call Waiting, Caller ID, Conference Call, DISA, Distinctive Ringtone, Do Not Disturb, Follow Me, IVR (Multi-layer), Music On Ringback, One Number Stations, One Touch Recording, Paging & Intercom, PIN Code, Ring Group, Smart DID, Speed Dial, Switch Call, Time Conditions, Video Call, Voicemail, Wakeup Call