Prices can vary greatly based on features needed, support and customization requests. Knowing what you're after helps vendors give you the most fair price.
Inbound Calling
Outbound Calling
Local Calling
International Calling
Three-Way Calling
Local Numbers
International Numbers
PBX
IP PBX
SIP Trunking
PRI Trunking
Direct Inward Dialing (DID)
Direct Outward Dialing (DOD)
Direct Trunk Overflow (DTO)
Dialed Number Information Service (DNIS)
Caller ID
Call Waiting
Call Forwarding
Call Hold
Call Transfer
Call Redial
Call Popup
Call Back
Call Mute
Call Queue
Voicemail
Emergency Calling
Automatic Call Distribution (ACD)
Auto Attendant
Find Me/Follow Me
Calling Name Delivery (CNAM)
Concurrent Call Sessions
Conference Bridge
Event-Driven Routing
Queue-Based Routing
Location-Based Routing
Priority-Based Routing
Call Log Reports
Call Recording
Voice
Chat/IM
SMS
MMS
Audio Conferencing
Screen Sharing
Business Phones
Multiple Location Management
Network Security
Internet Backup & Recovery
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