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Very Small Business
IP PBX
IP Phones
•
The IP PBX System Provides SIP Server (Registrar and Proxy) Functions
•
VoIP Service Provider Supports:
–
Voice and Services – Phone Numbers, Call Origination & Termination, Off-Net Call Routing
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Voice Messaging Services – Voicemail, Unified Messaging, etc.
•
Voice and Data Traffic Between Sites is Carried by the IP Network.
•
PSTN Carries Overflow Voice Traffic if the VoIP Service is Unreachable via LAN Attached
Gateway Appliance (PSTN = Public Switched Telephone Network)
© 2006 Cisco Systems, Inc. All Rights Reserved.
Small Business VoIP Over Broadband Network
BB Modem
Router
Gateway
Customer
Linksys/Cisco Proprietary – All Content Subject To Change – Not a Warranty
IP Network
VoIP SP Network
Legacy Telecom Network
PSTN
Very Small Business
BB Modem
Router
Gateway
IP Phones
Customer
IP PBX
4
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