A helpdesk manager at a financial company has received multiple reports from employees and customers that their phone calls sound metallic on the voice system. The helpdesk has been using VoIP lines…

The correct answer is B. A dedicated VLAN. A metallic or robotic sound in VoIP calls is a classic symptom of packet loss, excessive jitter, or network congestion affecting the voice codec. VoIP traffic is extremely latency- and jitter-sensitive. Placing VoIP endpoints on a dedicated VLAN separates voice traffic from…

Technical Integration of Enterprise Components

Question

A helpdesk manager at a financial company has received multiple reports from employees and customers that their phone calls sound metallic on the voice system. The helpdesk has been using VoIP lines encrypted from the handset to the PBX for several years. Which of the following should be done to address this issue for the future?

Options

ASIP session tagging and QoS
BA dedicated VLAN
CLower encryption setting
DTraffic shaping

How the community answered

(22 responses)

A
14% (3)
B
77% (17)
C
5% (1)
D
5% (1)

Explanation

A metallic or robotic sound in VoIP calls is a classic symptom of packet loss, excessive jitter, or network congestion affecting the voice codec. VoIP traffic is extremely latency- and jitter-sensitive. Placing VoIP endpoints on a dedicated VLAN separates voice traffic from general data traffic, enables QoS policies to be applied consistently, and prevents data bursts from degrading voice quality. SIP tagging and QoS alone (A) can help but do not isolate traffic the way a VLAN does. Lowering encryption (C) would reduce security and does not address the root cause of network congestion. Traffic shaping (D) is a partial measure but less effective without the isolation a dedicated VLAN provides.

Topics

#VoIP#VLAN#network quality#PBX

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