We Want your Feedback on 3CXPhone for iPhone and Use of the 3CX Tunnel

3CX Phone for iPhone - SIP Account

We are currently planning changes to 3CXPhone for iPhone, in particular in its usage as a remote extension. 3CX Phone System 11 includes various updates which make it easier to operate remote extensions. We feel that these changes have reduced the requirement for the Tunnel protocol for remote extensions with 3CXPhone for iPhone.

We would like to hear your experiences using 3CXPhone for iPhone as a remote extension – ideally if you’re running 3CX Phone System 11 with service pack 1. Connect 3CXPhone for iPhone as a Remote Extension (SIP Account) without using the 3CX Tunnel App. Use the following Poll to leave us your feedback.

Please note that we specifically need feedback on the use of 3CXPhone for iPhone and not on the Tunnel itself.

At the bottom of this article you will find instructions on how to configure 3CXPhone for iPhone without using the 3CX Tunnel.

How to Configure 3CX Phone for iPhone Without Using the 3CX Tunnel App

If you are using 3CXPhone for iPhone with 3CX Phone System you can provision the phone when you’re on the same LAN as the PBX. Click here for more information.

Click here if you are using 3CX Phone for iPhone and you need to configure the settings for your extensions and the PBX manually.

Thank you for your feedback!

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  1. I like to kick off the question open with my experiences…
    In 99% I can use every WiFi to have a 2 way audio communication. In some cases this may fails and I start temp. the Tunnel to get it working for a call. The 1% can be based on a router which uses SIP/ALG or has a build in SIP function like Thomson or BT Hub routers.

    Working Router w/o any NAT or change know to me to work are:
    – AVM
    – Draytek Vigor
    – Avix

    My 3G Provider is
    -Cytanet (Vodafone)

    October 8, 2012 at 3:56 pm
  2. Neil

    We have ceased using the mobiles as remote extensions simply because of really bad background noise.

    October 12, 2012 at 9:09 am
    • Thank you for your feedback. However this is dependent on the quality of the phone microphone…. Decent mobiles also have decent microphones…

      October 12, 2012 at 1:51 pm
  3. Lee


    Is this a microphone issue, or something else? If it’s a microphone issue, then (since this is only dealing with iPhones), is it a microphone issue with certain versions of the phone? This is, after all, dealing only with one make of phone, unlike Android, where you have umpteen manufactures/variations.

    October 18, 2012 at 11:24 pm
    • @Lee – Sorry i saw post is only about iphone just now :) Well on my Android phone i never had problems with Background noise. And my colleagues are using iPhones all the time and we dont have any background noise issues so to be honest i cant agree with you there. 3CXPhone relies on the iPhone microphone to cancel out the background noise. Maybe you just have a very noisy environment… :)

      October 19, 2012 at 1:48 pm