Deal of The Day! Hurry Up, Grab the Special Discount - Save 25% - Ends In 00:00:00 Coupon code: SAVE25
Welcome to Pass4Success

- Free Preparation Discussions
Mail Us support@pass4success.com
Location US
Mob_nav_barsMENU

Cisco 300-820 Exam - Topic 25 Question 116 Discussion

Posted by Leslee on Jul 19, 2026 at 01:36 PM

An engineer configures a Cisco Collaboration environment to use Mobile and Remote Access for external access for company users. The engineer uses OAuth with refresh on the Cisco UCM SIP lines for extra security and improved user experience. During the setup, Mobile and Remote Access does not work, it is enabled on the Cisco UCM and Cisco Expressways. SIP trunks on ports 5090 and 5091 are configured to avoid conflicts with other SIP trunks between internal Cisco UCM clusters. The traversal zone also uses port 6500. The traversal zone between Expressways shows no errors, and the requests hit Expressway-E from the Internet. What is the reason that the solution does not work?

Suggested Answer: D

Get Premium 300-820 Questions as Interactive Web-Based Practice Test or PDF Real Exam Format Detailed Explanations Instant Access Get Your Practice Test
12 comments · newest first
CA
Carri 1 month ago
I agree with B too. If the traversal port isn't set right, it won't work.
MA
Maybelle 2 months ago
I'm leaning towards B. The default port issue seems likely.
RO
Rory 2 months ago
I think it's option A. OAuth with refresh might not be compatible here.
BO
Boris 2 months ago
Really? I had no idea MRA had those port conflicts!
DA
Dalene 2 months ago
I'm leaning towards C. Conflicting ports can definitely cause problems.
AD
Adell 2 months ago
Wait, isn't the default port for MRA 6001? Sounds like B could be the issue.
LU
Lucille 2 months ago
Totally agree, A makes the most sense!
WE
Weldon 3 months ago
I think it's A. OAuth with refresh isn't supported here.
RO
Rozella 3 months ago
I vaguely remember something about SIP trunk ports needing to be unique, so maybe the conflict with port 5091 is the reason it’s not working?
ME
Melda 3 months ago
I feel like the traversal zone port being set to 6500 could be causing a conflict, but I need to double-check the default ports for Mobile and Remote Access.
DA
Dacia 3 months ago
I think I practiced a similar question where the default port for Mobile and Remote Access was mentioned, but I can't recall the exact details.
VE
Veronika 3 months ago
I remember reading that OAuth with refresh might not be fully supported in some configurations, but I'm not sure if that's the main issue here.
0/2000 characters

Save Cancel