An administrator is troubleshooting call failures on an H.323 gateway via the CLI. To see signaling for media and call setup, which debug must the Administrator turn on? (Choose two)

The correct answer is B. debug H.225 asn1 C. debug H.245 asn1. H.323 is a protocol suite composed of sub-protocols, each responsible for a specific part of the call. H.225 handles call signaling and setup (Q.931 and RAS messages), while H.245 handles media capability negotiation and logical channel control. To see call setup signaling, 'debu

Signaling and Call Control Protocols

Question

An administrator is troubleshooting call failures on an H.323 gateway via the CLI. To see signaling for media and call setup, which debug must the Administrator turn on? (Choose two)

Options

Adebug H.323 messages
Bdebug H.225 asn1
Cdebug H.245 asn1
Ddebug H.225 media
Edebug H.323 asn1

How the community answered

(56 responses)

A
14% (8)
B
75% (42)
D
7% (4)
E
4% (2)

Explanation

H.323 is a protocol suite composed of sub-protocols, each responsible for a specific part of the call. H.225 handles call signaling and setup (Q.931 and RAS messages), while H.245 handles media capability negotiation and logical channel control. To see call setup signaling, 'debug H.225 asn1' is used; to see media negotiation, 'debug H.245 asn1' is used. Both decode ASN.1-encoded messages for human readability. Options A and E ('debug H.323 messages' and 'debug H.323 asn1') are not valid Cisco IOS commands, and 'debug H.225 media' does not exist-media control is handled by H.245, not H.225.

Topics

#H.323 troubleshooting#H.225 signaling#H.245 signaling#Voice gateway debugging

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