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Exam 300-815 All Questions

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Exam 300-815 topic 1 question 3 discussion

Actual exam question from Cisco's 300-815
Question #: 3
Topic #: 1
[All 300-815 Questions]

The administrator of ABC company is troubleshooting a one-way audio issue for a call that uses H.323 protocol (slow-start mode). The administrator requests that you provide the IP and port information of the Real-Time Transport Protocol traffic that had the one-way audio call.
You gather the H.225 and H.245 messages for one of the one-way audio calls. Where can you find the RTP IP and port information for both sides? (Note: This call flow has not invoked any media resources like MTP or transcoders).

  • A. H.245 Terminal Capability Set
  • B. H.245 Open Logical Channel
  • C. H.225 Connect
  • D. H.245 Open Logical Channel Ack
Show Suggested Answer Hide Answer
Suggested Answer: B 🗳️
Reference:
http://ccievoicehopeful.blogspot.com/2012/09/h323-notes.html
by hbkmanu at Sept. 23, 2021, 6:11 a.m.

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timmyz
Highly Voted 2 years, 3 months ago
the right answer is D... the H245 Open Logical Channel Ack has both RTP and RTP port https://community.cisco.com/t5/collaboration-voice-and-video/h323-call-flow/ta-p/3160014
upvoted 5 times
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domangez
Most Recent 7 months, 3 weeks ago
H.245 OLC open logical channel - asks the endpoint to open a port for media communication. Endpoint responds with a H.245 OLC ACK message providing the RTP port number it has opened for communication for that call. (D is correct)
upvoted 2 times
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john_doe_9999
10 months, 3 weeks ago
Selected Answer: D
D is correct
upvoted 1 times
...
hbkmanu
3 years, 1 month ago
The answer should be D, Another Cisco ref for the same https://community.cisco.com/t5/collaboration-voice-and-video/h-323-basic-call-signalling-slow-start/ta-p/3155090
upvoted 2 times
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hbkmanu
3 years, 1 month ago
H245 Open Logical Channel contains only RTCP port, H245 Open Logical Channel ACk will have both RTP and RTP Port. https://community.cisco.com/t5/collaboration-voice-and-video/h323-call-flow/ta-p/3160014
upvoted 3 times
...
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C (25%)
B (20%)
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