ATT.COM/OFFICEATHAND


Assuring High-Quality Voice Calls

Get reliable, high-quality voice service. Read about best practices and tools that will help you get the most from your service. And learn how your local network, Internet connection, and routers contribute to overall call quality.

Learn about quality of service and key terminology

When making a Voice over IP (VoIP) phone call, the sound of your voice is broken into thousands of packets. These packets travel through the Internet to RingCentral Office@Hand from AT&T, and on to their final destination. Many factors can affect packets and call quality. The three most common issues that affect VoIP Quality of Service (QOS) are latency, jitter, and packet loss.

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Improving your QoS

Your Internet connection and devices you use to connect to the Internet can affect your QoS. Here are a few ways you can improve your VoIP QoS:

1. Upgrade your internet connection.

VoIP is highly dependent on Internet upload and download speeds. If you have experienced any call quality issues during a VoIP call, your first stop should be with your current Internet Service Provider (ISP). Many ISPs will upgrade your connection speeds for free simply to keep you as a customer. If not, you should either consider paying for a faster Internet connection or moving to another ISP that offers greater connection speeds for the same price.

2. Drop Wifi,use Ethernet.

WiFi networks can be softy,especially in environments surrounded by concrete walls or floors. Electrical devices and also add interference. Try a wired Ethernet connection if you haven't been able to improve your WiFi singnal.A wired connection greatly reduces interference, and handles data intensive calls better.

3. Pause any large downloads while on call.

You may experience delays or dropped calls If you're downloading large files over the same network you use to make calls. Your internet connection may not have enough bandwidth to handle the increase load. Pause any non-essential downloads before making a call.

4. Use QoS-enabled network equipment.

There are special considerations when designing your network to support voice traffic. QoS-enabled routers prioritize voice traffic over lower priority network traffic, such as large downloads. Reference the following document for information on recommended routers:

Test your bandwidth

A solid Internet connection means solid voice quality. We recommend using a high-speed DSL, cable, or fiber optic connection with dedicated upload and download bandwidth (speed only for voice, not sharing with data) of 90Kbps or higher for each line you plan to run. Please use our Internet connection tests to verify your connection.