350-801 Question #38: Real Exam Question with Answer & Explanation

The correct answer is A: The RTP port is set to 0.. The format of media announcement is as follows. m=<media> <port> <transport> <fmt list> The first sub-field is the media type. Currently defined media for TMedia is "audio". The second sub-field is the transport port to which the media stream will be sent. In Smart Media we don't

Protocols and Endpoints

Question

Refer to the exhibit. A call is failing to establish between two SIP Devices. The Called device answer with this SDP. Which SDP parameter causes this issue?

Options

AThe RTP port is set to 0.
BThe payload for G.711ulaw must be 18.
CThe media stream is set to sendonly.
DThe calling device did not offer a ptime value.

Explanation

The format of media announcement is as follows. m=<media> <port> <transport> <fmt list> The first sub-field is the media type. Currently defined media for TMedia is "audio". The second sub-field is the transport port to which the media stream will be sent. In Smart Media we don't specify it in Profile SDP Description and therefore you should insert "0".

Topics

#SIP#SDP#Media Negotiation#Call Troubleshooting

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