Which TCP port is used by default for SIP OAuth on a Cisco UCM server when using Mobile and Remote Access?

The correct answer is A. 5091. Cisco UCM supports SIP OAuth for Mobile and Remote Access (MRA) to provide token-based authentication without requiring certificate-based mutual TLS for every endpoint. By default, Cisco UCM listens on TCP port 5091 for SIP OAuth connections in the context of MRA. This is…

Edge Services

Question

Options

A5091
B5061
C5090
D5060

How the community answered

(32 responses)

A
91% (29)
B
3% (1)
D
6% (2)

Explanation

Cisco UCM supports SIP OAuth for Mobile and Remote Access (MRA) to provide token-based authentication without requiring certificate-based mutual TLS for every endpoint. By default, Cisco UCM listens on TCP port 5091 for SIP OAuth connections in the context of MRA. This is distinct from standard SIP (5060), SIP TLS (5061), and port 5090 which is used by Expressway-C for its SIP OAuth listener. Knowing these port distinctions is critical for firewall rules and troubleshooting MRA deployments.

Topics

#SIP OAuth#Mobile and Remote Access (MRA)#Cisco UCM#TCP Ports

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