In our UC projects we often asked to leverage existing PBX or to ensure smooth transition to new UC environment. We should even say these scenarios are standard and a “big bang” migrations or Greenfield installations are rare. So how do we implement SBC with minimum disruption for end services? At the beginning there a traditional PBX connected let’s say by ISDN line to PSTN operator:
We would install SBC between PBX and Operator:
Note that no change of the configuration is required for PBX or Operator. Quite useful in case you have limited hardware supply for a very old PBX or if maintenance support is too extensive or simply absent. Once you pass this step you are free to move further: you may introduce smoothly a new UC system such as Skype for Business, two systems will co-exist and users from one system will be able to reach users from another system:
or change uplink to operator from legacy ISDN to modern SIP trunk:
If you are fully migrated to Skype for Business, you can disconnect and phase out PBX:
Please visit our Web site pages to find out more about SBC from our partners – Sonus Networks and Audiocodes.