With Dialpad, there are certain network configurations that are required for Deskphones and Applications to work smoothly.
This article will guide you through the steps to troubleshoot the "Please check your internet connection" error you are receiving for your corporate network.
Bandwidth
To avoid call quality issues and to ensure the best possible voice quality, we recommend using either a high-speed DSL, cable, or fiber-optic connection with dedicated upload and download bandwidth for voice of 100 kilobits/sec for each voice line you plan to run.
FQDNs
The following FQDNs must be allowed for routing, security, system maintenance, and remote device management communication.
-
dialpad.com
-
www.obitalk.com
-
www1.obitalk.com
-
prov.obitalk.com
-
devpfs.obitalk.com
-
storage.googleapis.com
-
ubervoice.ubervoip.net
-
turn.ubervoip.net
-
stun.l.google.com
-
uvwss.ubervoip.net
-
legacy.dialpad.com
-
dialpadcdn.com
-
static.dialpadcdn.com
-
prov*.dialpad.com
- google-public-dns-a.google.com
- google-public-dns-b.google.com
-
*.googleusercontent.com
-
*.pusher.com
Open Ports
After reassuring the traffic is whitelisted to the above-mentioned FQDNs, there will be certain ports that you will need to open. The ports do vary depending on the type of Dialpad clients (native app, Obihai, mobile) you plan to use on a given network.
Required open ports for Browser and Native Applications
|
Port |
Protocol |
Notes |
|
443 |
TCP |
Product features such as images, messages, social profiles, etc. Sent via a combination of HTTPS and WSS protocols. |
|
16384 to 32768 |
UDP outbound UDP bidirectional for established connections |
Media (audio and video data), active calls, RTP & SRTP |
|
19301 and 19302 |
UDP |
STUN for NAT traversal |
|
443 |
UDP/TCP |
TURN for NAT traversal |
Required open ports for Obihai and SIP Phones
|
Port |
Protocol |
Notes |
|
80 |
TCP |
Images that appear on the Obihai LCD display when one of your contacts calls you. |
|
7060, 5060 |
UDP outbound, TCP |
SIP signaling for call setup |
|
5061 |
TLS |
For secure phones (phones secured by TLS) |
|
10000 to 20000 |
UDP outbound UDP bidirectional for established connections |
For Obihai only. Media (audio and video data) for active calls and configuration downloads from Obihai configuration servers. |
|
16384 to 32768 |
UDP outbound UDP bidirectional for established connections |
Media (audio and video data) for active calls, RTP & SRTP |
After setting your FQDNs, verifying the open ports, and checking for sufficient bandwidth, the issue should be corrected.
If the issue persists, please contact Dialpad Support.
For additional setup instructions, please visit our detailed Network Setup Recommendations in this Help Center Article