問題文
A carrier offers to hand calls to the tenant with the Opus codec and with SIP early offer. What has to change before those calls reach Webex Contact Center?
選択肢
- Calls have to arrive as one of the G.711 codecs with the packetization timer in the SDP at 20 ms, and Webex Contact Center transcodes the Opus stream at its media edge, so the early offer alone has to become a delay offer and no other change is needed.
- Calls have to arrive as G.711 with the packetization timer in the SDP at 20 ms, so the audio is converted by a resource outside the platform, and the signaling has to use a delayed offer instead of an early one, which is not supported.
- Calls have to arrive as a G.711 stream with the packetization timer in the SDP at 20 ms, and the Opus stream is accepted for the opening span of a call, so the DTMF method is the field that does not match.
- Calls have to arrive as G.729 with the packetization timer in the SDP at 30 ms, so the Opus stream is transcoded outside the platform, and no delay offer is needed once that timer is agreed.