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Cisco ASA Series Firewall ASDM Configuration Guide
Chapter15 Information About Cisco Unified Communications Proxy Features
Licensing for Cisco Unified Communications Proxy Features
For the Cisco Unified Mobility solution, the TLS client is a Cisco UMA client and the TLS server is a
Cisco UMA server. The ASA is between a Cisco UMA client and a Cisco UMA server. The mobility
proxy (implemented as a TLS proxy) for Cisco Unified Mobility allows the use of an imported PKCS-12
certificate for server proxy during the handshake with the client. Cisco UMA clients are not required to
present a certificate (no client authentication) during the handshake.
For the Cisco Unified Presence solution, the ASA acts as a TLS proxy between the Cisco UP server and
the foreign server. This allows the ASA to proxy TLS messages on behalf of the server that initiates the
TLS connection, and route the proxied TLS messages to the client. The ASA stores certificate trustpoints
for the server and the client, and presents these certificates on establishment of the TLS session.
Licensing for Cisco Unified Communications Proxy Features
The Cisco Unified Communications proxy features supported by the ASA require a Unified
Communications Proxy license:
•Phone proxy
•TLS proxy for encrypted voice inspection
•Presence federation proxy
•Intercompany media engine proxy
Note In Version 8.2(2) and later, the Mobility Advantage proxy no longer requires a Unified Communications
Proxy license.
The following table shows the Unified Communications Proxy license details by platform for the phone
proxy, TLS proxy for encrypted voice inspection, and presence federation proxy:
Note This feature is not available on No Payload Encryption models.
Model License Requirement1
ASA 5505 Base License and Security Plus License: 2 sessions.
Optional license: 24 sessions.
ASA 5510 Base License and Security Plus License: 2 sessions.
Optional licenses: 24, 50, or 100 sessions.
ASA 5520 Base License: 2 sessions.
Optional licenses: 24, 50, 100, 250, 500, 750, or 1000 sessions.
ASA 5540 Base License: 2 sessions.
Optional licenses: 24, 50, 100, 250, 500, 750, 1000, or 2000 sessions.
ASA 5550 Base License: 2 sessions.
Optional licenses: 24, 50, 100, 250, 500, 750, 1000, 2000, or 3000 sessions.
ASA 5580 Base License: 2 sessions.
Optional licenses: 24, 50, 100, 250, 500, 750, 1000, 2000, 3000, 5000, or 10,000 sessions.2