Spoke Phone is a Voice over Internet Protocol (VoIP) calling application that makes high definition quality calls over the internet (WiFi or cellular data). Spoke Phone works great using 4G data or correctly configured WiFi/Internet. If you want to use Spoke Phone while connected to WiFi/Internet, you need to meet these requirements:

  1. High-quality router with Quality of Service (QoS) configured.
  2. Good WiFi signal strength at the places where people typically use their phones.
  3. Good upstream/downstream internet bandwidth (fiber preferred).

Alternatively, you can use Spoke Phone on 4G mobile data.

Mobile data usage from calls on Spoke Phone

On average, making phone calls on Spoke Phone uses 30MB of data per hour
of calling.

What happens if your WiFi and network are not set up correctly?

If your WiFi and network are not set up correctly the following call issues may occur:

  • Crackling, clicking, or a loud burst of static.
  • Delays when talking or echo.
  • Calls dropping unexpectedly.
  • Answering calls and no one is there or you hear on-hold music.
  • Failures when transferring calls.
  • Missed calls due to delayed ringing/phones not ringing at all.

What is QoS and why do you need it?

By setting up QoS, Spohe Phone calls will be prioritized over other internet traffic. It's a "bus lane" for phone calls that no other traffic is allowed to enter. The bus lane is always open and flows fast. Unless you implement QoS on your WiFi/Internet, Spoke Phone cannot guarantee your call quality.

Part 1: What Router do I need and how do I set it up?

Home-grade routers or routers that you get for free from your internet provider are usually not suitable for business phone call use. Even if you have a fast internet connection with high upstream and downstream bandwidth, other internet traffic over that connection can interfere with the continuous stream of two-way data required for high-quality calls.

Buy a Business-Grade Router

By investing in a business-grade router and having it correctly configured, you will have consistent high-quality calls.

Router recommendations:

Look for a router that supports either:

  • QoS configuration by IP address (preferred)
  • QoS by DSCP (not optimal)

Firewall/Router Configuration

Your firewall/router should allow outgoing UDP and TCP (HTTPS) to the public internet from the devices that will be using Spoke Phone, and allow return traffic in response. If your router includes:

  • SIP Application Level Gateway (ALG) function
  • Stateful Packet Inspection (SPI)

Make sure to DISABLE both of these functions as they can interfere with voice traffic and intermittently block incoming calls from ringing on your phone.

Office size Good Examples
Smaller (3-10 people) Netgear Nighthawk R7000P | AC2300
Netgear Orbi RBK50 AC3000
Netgear Orbi Pro SRK60 WIFI SY
Larger (10+ people) Ubiquiti Unifi
Ubiquiti Edgerouter
Cisco Meraki



- A lot of home-grade routers say they have QoS, but they are often
referring to 
QoS for gaming, which is done at a device level. These
will not help prioritize your bandwidth for VoIP calls. 

- Most routers have both these functions turned ON by default. 
More information on this step and instructions for specific router
models can be 
located here


Manually configuring QoS

  • If you have a router that allows you to manually configure QoS and prioritize traffic to specific IP addresses and port ranges, use the following configuration.
  • If your router allows you to allocate a specific amount of bandwidth to the prioritized traffic, allocate 100kb/s per expected concurrent call.

RTP Media (UDP) Traffic

This is the media channel and the most important to have committed bandwidth and QoS. Make sure that you set all applicable addresses that correspond to your location. Spoke connects to these addresses using UDP, port range 10,000-20,000

Location Media Server IP Address Range CIDR:
Australia & New Zealand - -
USA & Canada - - -
Singapore & South East Asia - -
Europe & South Africa - - - -
Japan - -

Different routers have different settings. The steps above are generally recommended configurations. We recommend you engage your IT support professional to correctly configure any network or WiFi changes.

Part 2: How much Wi-Fi signal strength do I need?

We recommend a Relative Signal Strength (RSSI) of -60dBm or higher (closer to zero = stronger signal) to avoid packet loss. Packet loss means the audio may drop out in your calls, meaning you miss the odd word or two.

Signal strength needs to be strong in all the places your employees usually make and take phone calls. Your IT support professional can test and fix your signal strength. If you want to have a go yourself at testing this first, there are numerous free apps available to download from the Play Store / App Store.


2.4Ghz vs. 5Ghz

If you have two channels available (2.4Ghz and 5Ghz), make sure your mobile phone
is always connected to the 2.4Ghz option.

Part 3: How much internet speed do I need?

We generally recommend Fibre or cable internet. In some locations/instances, VDSL may work for smaller offices of 5 or so people. That said, everything depends on the quality of your equipment and how well your Wi-Fi/Internet network is setup. As a general rule, good call quality requires the following to be consistent over the entire call duration:

Download speed at least 20mb
Upload speed at least 10mb
Ping (latency) less than 80ms
Jitter less than 10
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