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VoIP for Business network We strongly recommend that you ensure your chosen ISP/ADSL provider is directly connected to BT IPVS to avoid your VoIP traffic being routed across the public internet UNITED

KI NGDOM Mobile Networks

PSTN Fixed Line

VoIP to PSTN connectivity

PSTN Break in/out via BTW IPX

VoIP Business Platform v

SBC's Session Border Controller

TeleHouse East

Securely hosted by BT with full disaster recovery

TeleCity

SBC's Session Border Controller

Direct Access Internet

ADSL

Large Sites- SIP Trunks

Customer Owned Network

Small Sites - Hosted VoIP

Router

Home & Mobile Hosted VoIP Router

Router

LAN Switch

Broadband or WiFi

LAN Switch

Media Gateway/ATA

ATA

Media Gateway/ATA

IP-PBX

TDM-PBX

TDM-PBX sites

High Speed Access

Many Types of access

IP-PBX sites

TDM sites

IP Phone sites

TDM sites IP Phone

non approved handsets

All sizes of business and all types of phones

Laptops


VoIP Diagram