Hosted VoIP Solution

Image 1

PSTNMedia Gateway

T1 / PRIPOTS linesOthers

SIP Servers1.Soft Switch2.Registration Server3.Others

Cluster A

SIP Servers1.Soft Switch2.Registration Server3.Others

Cluster BSubscriber A

Subscriber B

Dat

abas

e Sy

nch

(Acti

ve, A

ctive

)

Register to specific IP address, but this would present a scalability issue.

VoIP Traffic to and from PSTN

DNS Based failover

PSTNMedia Gateway

T1 / PRIPOTS linesOthers

SIP Servers1.Soft Switch2.Registration Server3.Others

Cluster A

SIP Servers1.Soft Switch2.Registration Server3.Others

Cluster BSubscriber A

Subscriber B

Dat

abas

e Sy

nch

(Acti

ve, A

ctive

)

DNS Server

SRV Record_sip._udp.voip.comapnydomain.com

SRV Record with Load Sharing_sip._udp. 0 40 a.example.com

0 40 b.example.com 0 20 c.example.com 1 0 backup.somewhere.com

VoIP Traffic to and from PSTN

Hosted Solution

Hosted Solution

Subscriber ASubscriber B

GeoDNS GeoDNS