Which two statements about the restrictions for support of H.239 are true? (Choose two.) 

Answer options:

A. SIP to H323 video calls using H.239 are not supported.
B. Redundancy for H.323 calls is not supported.
C. H.239 calls are not supported over intercluster trunks with Cisco Unified Communications Manager.
D. H.239 is not supported with third-party endpoints.
E. Cisco Unified Communications Manager supports a maximum of three video channels when using H.239.

AB

Restriction for Support for H.239 The Support for H.239 feature has the following restrictions: ✑ Interworking SIP-H.323 Video calls using H.239 is not supported. ✑ Redundancy for H.323 calls is not supported. ✑ A fast-start request cannot include a request to open an H.239 additional video channel as it is not supported. ✑ H.239 systems based on H.235 is not supported. ✑ The SBC does not support call transfer for H.323 calls. When an H.323 endpoint is placed on hold, it closes its media as well as video channels. References: http://www.cisco.com/c/en/us/td/docs/routers/asr1000/configuration/guide/sbcu/2_xe/sbcu_2_xe_book/sbc_h239.html