What is the cause of this problem?

A SIP User was able to login using the latest Avaya Workplace client, but unable to login using an older one-X Communicator client.

What is the cause of this problem?
A . one-X Communicator only supports H.323 connections.
B. The Avaya Aura Session Manager (SM) Minimum Endpoint TLS version is set above 1.0.
C. For one-X Communicator registrations, Avaya Aura Session Manager (SM) is set to Deny.
D. one-X Communicator does not support SIP.

Answer: B

Explanation:

Reference: https://documentation.avaya.com/en-US/bundle/AdministeringAvayaAuraSystemManager_r10.1/page/Changing_the_TLS_versi on_for_System_Manager.html