Overseas conference sound quality improvement: Teams calls blurry​??? Solution//Global IPLC service

Overseas conference sound quality improvement: Teams calls blurry??? Solution//Global IPLC service provider of Shigeng Communication

一、In today's increasingly globalized office, cross-border remote meetings have become an important way for enterprises to collaborate on a daily basis. However, many users often encounter problems such as "blurry sound", "unclear hearing", "echo" or "intermittent" when using Microsoft Teams for overseas meetings, which seriously affects communication efficiency and professional image. This article will provide a practical optimization strategy from four dimensions: network, device, software settings, and environment, to significantly improve the sound quality of Teams overseas calls.

1. Root cause analysis: Why is the voice of overseas Teams calls blurry?

High latency and packet loss: International links are susceptible to high latency (>200ms) and packet loss due to factors such as physical distance, cross-border routing, and operator policies.

Poor quality local audio equipment: using a built-in microphone or low-quality headphones in a laptop, resulting in poor sound pickup and high background noise.

Insufficient or fluctuating network bandwidth: Although Teams audio only requires 30-50 kbps, competing for bandwidth with other applications such as Zoom, YouTube, and cloud sync can still cause speech compression distortion.

Improper software settings: Teams' 'High Quality Audio' option is not enabled, or the system audio driver is not optimized.

Environmental interference: background noise, room reverberation, and multiple people speaking simultaneously can all reduce speech clarity.

2. Practical optimization strategy

Strategy 1: Optimize network connectivity (most critical)

Prioritize using wired networks: Wi Fi is susceptible to interference, so it is recommended to connect directly to the router via Ethernet to ensure stability and low latency.

Testing the quality of international links:

Use PingPlotter or mtr commands to track the path to Teams servers (such as teams. Microsoft. com) and identify high packet loss nodes.

Test the network performance from local to Microsoft cloud services using the Microsoft 365 Network Connectivity Test.

Enable QoS (Quality of Service):

Set high priority for Teams traffic (UDP 3478-3481, TCP 443) on the enterprise router to ensure priority transmission of voice packets.

Consider SD-WAN or international dedicated line:

For enterprises holding high-frequency overseas conferences, SD-WAN solutions can be deployed for intelligent routing, or they can apply for China Unicom/Telecom's international premium network to significantly reduce latency and jitter.

Strategy 2: Upgrade audio hardware

Using professional USB earphones/headphones:

Recommend devices such as the Jabba Evolve series, Poly Voyager, and Logitech Zone that support Teams certification and have active noise reduction and directional pickup capabilities.

Avoid using Bluetooth earphones for important meetings:

Bluetooth has encoding and decoding delays and bandwidth limitations, which can easily lead to compressed and intermittent sound quality.

External USB microphone (if hands-free):

Such as Shure MV7 and Rode NT-USB Mini, used in conjunction with a spray hood and sound-absorbing environment.

Strategy 3: Fine tune Teams and Operating System Configuration

Enable high-quality audio in Teams:

Path: Teams Settings → Devices → Audio Devices → Check "Allow Teams to optimize my audio experience".

If an authentication device is used, Teams will automatically enable HD Voice and AI noise reduction.

Turn off Windows audio enhancement feature:

Right click on the taskbar volume icon ->Sound Settings ->Select Input Device ->Device Properties ->Turn off "Audio Enhancement" and "Allow App Exclusive Control".

Update audio driver:

Especially for common sound card drivers such as Realtek and Conexant, older versions may cause compatibility issues.

Strategy 4: Improve meeting environment and behavior habits

Choose a quiet, small space conference room: reduce reverberation and background noise.

When speaking, be close to the microphone (15-30cm) to avoid long-distance sound pickup.

Mute non speakers: To prevent echo and crosstalk, Teams supports the "Auto Mute New Attendees" feature (enabled in meeting options).

Using Teams' built-in AI noise reduction:

Click on "More Actions (...)" → "Device Settings" → Set the noise suppression level to "High" or "Extremely High" during the meeting.

3. Advanced suggestion: Enterprise level deployment optimization

For companies that frequently hold cross-border conferences, it is recommended to:

Deploy local Microsoft Teams Direct Routing or local media bypass to reduce media streams bypassing overseas data centers.

Unified procurement of Teams certified audio devices, and batch push of audio strategies through Json or SCCM.

Regularly conduct network health checks and negotiate with ISPs to optimize international export bandwidth.

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Features of Global Application Network Products for Multinational Enterprises:

1. Quickly access global Internet cloud platform resources

2. Stable and low latency global cloud based video conferencing

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Product tariff: