During a call setup in an Avaya Aura® environment, what is the purpose of the INVITE message? (Choose three)

The correct answer is A. To initiate a call B. To negotiate session parameters D. To provide routing information. In SIP-based Avaya Aura® environments, the INVITE message serves as the foundation of call establishment: it initiates the session (A), carries SDP (Session Description Protocol) payload to negotiate media parameters such as codecs and ports (B), and includes routing headers (Via

Describe Avaya Aura Core Components and Support Tools

Question

Options

ATo initiate a call
BTo negotiate session parameters
CTo authenticate the user devices
DTo provide routing information
ETo finalize the call setup

How the community answered

(50 responses)

A
92% (46)
C
6% (3)
E
2% (1)

Explanation

In SIP-based Avaya Aura® environments, the INVITE message serves as the foundation of call establishment: it initiates the session (A), carries SDP (Session Description Protocol) payload to negotiate media parameters such as codecs and ports (B), and includes routing headers (Via, Route, Request-URI) that guide the message through the signaling path (D).

C is wrong - authentication is handled by a separate challenge-response exchange using 401 Unauthorized / 407 Proxy Auth Required responses and re-INVITE with credentials; the INVITE itself does not authenticate devices.

E is wrong - call setup is finalized by the ACK message sent after receiving a 200 OK, not by the INVITE; INVITE only initiates the negotiation.

Memory tip: Think of INVITE as the "proposal" - you start the conversation, propose the terms, and tell the network where to deliver it. The deal is only closed when ACK arrives - that's when setup is truly finalized.

Topics

#SIP INVITE Messages#Call Setup Process#Session Negotiation#Avaya Aura Communications

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