The Acme Snowboards Company is planning to install an IP videoconferencing system. Up to 10 vendors need to participate in weekly videoconferences using H.320 video endpoints at 128 kbps. All other conference participants will be internal staff using the IP videoconferencing system. Which two products should the company install to allow the remote vendors to join into the weekly conference? (Choose two.)

A.
Cisco IPVC 3544 Chassis

B.
Cisco IPVC 3511 Multiplepoint Control Unit

C.
Cisco IPVC 3521 BRI Videoconferencing Gateway

D.
Cisco IPVC 3526 Videoconferencing gateway