300-820 · Question #9
Which two licenses are required for the B2B feature to work? (Choose two.)
The correct answer is A. Traversal Server C. Rich Media Sessions. Business-to-business calls through Cisco Expressway require both a Traversal Server license for firewall traversal and a Rich Media Sessions license for audio/video media.
Question
Which two licenses are required for the B2B feature to work? (Choose two.)
Options
- ATraversal Server
- BTURN Relays
- CRich Media Sessions
- DAdvanced Networking
- EDevice Provisioning
How the community answered
(36 responses)- A92% (33)
- B6% (2)
- E3% (1)
Why each option
Business-to-business calls through Cisco Expressway require both a Traversal Server license for firewall traversal and a Rich Media Sessions license for audio/video media.
The Traversal Server license on Expressway-E enables the firewall traversal capability that allows B2B calls to traverse NAT and firewalls from external organizations.
TURN Relays are used for ICE-based media relay in specific configurations but are not a primary license requirement for standard B2B calling.
The Rich Media Sessions license on Expressway allocates capacity for audio and video call sessions, which is required for any media-bearing B2B call to be established.
Advanced Networking is not a standard Expressway license category required for B2B call functionality.
Device Provisioning is a license related to endpoint provisioning via Expressway, not a requirement for enabling B2B calling.
Concept tested: Expressway B2B licensing requirements
Source: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X12-5/exwy_b_cisco-expressway-basic-configuration/exwy_b_cisco-expressway-basic-configuration_chapter_011.html
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