Unable to register over 3G

If you get an error when registering over 3G or Edge, but have no problems over Wi-Fi, there is a good chance your cellular provider blocks or mishandles SIP or UDP traffic. You can try to use our proxy to convert the traffic to a transport protocol less likely to be blocked by cellular providers.

iOS users: Tap on settings, then SIP Accounts, then your SIP Account. Tap on advanced settings, then Outbound Proxy. Configure the following.

Enabled: on

Host: proxy.acrobits.cz:7071

Transport Protocol: tls(sip)

Be sure to save the change.

Android users: Tap on settings, then SIP Accounts, then your SIP Account. Tap on advanced settings and configure the following.

Proxy: proxy.acrobits.cz:7071

Transport Protocol: tls(sip)

If you still have an issue, disable the proxy and send us a SIP Log. From the keypad, tap on settings, then preferences. Turn Log SIP Traffic on. Tap done, then restart the Softphone (or Groundwire). Wait for the registration to fail. Go back to settings and tap on SIP Log. Tap on Send to Acrobits and include your name in the note. Then submit a ticket so we can review it. Be sure to mention in the ticket that you have gone through the steps in this article.

keywords: register, error, 3G, edge, network, acrobits, softphone, groundwire