Testking puts new test for our December downloads. The file is officially named as BlackBerry BCP-521 Integrating the BlackBerry MVS SIP Gateway Solution. This certification test is conducted by BlackBerry and has internal number BCP-521. This test is assigned with the following special version v2016-12-01 by hyman 44q. The exam file extension is still VCE. You may to get it for your private exam preparation from our growing from this Friday.