3CX Client for Android and iOS updates, and the 3CX SBC release for Debian Linux

Client Update 3CX Client for Android

This week we are introducing the next 3CX Client for Android client update. About a month ago, a new version of the 3CX Client for Android client was released with the ability to answer a call from the device lock screen. This update improves the speed of answering a call, and also includes other minor fixes:

• Increased speed of answering an incoming call
• When calling to other IVR systems where DTMF numbers are required, these numbers will now be displayed on the client’s screen.
• Fixed bugs reported by users on the Google Play Store
• Fixed a bug where the proximity sensor stopped working when you hold and resume a call.
• Incoming calls sometimes could not be put out of hold
• Messages tab renamed Chat

Download the latest 3CX Client for Android from here .

→ Complete change log .
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3CX Client for iOS Client Update

We also present our client update 3CX Client for iOS. After the previous major update with callkit integration , this update contains only minor improvements that further enhance the user experience:

• Fixed random breaks during a call.
• Fixed a bug that caused the application to crash when answering a call from the lock screen
• When calling to other IVR systems where DTMF numbers are required, these numbers will now be displayed on the client’s screen.
• Issues with chat notification sounds fixed.
• Correct work Callkit integration when holding and restoring a call
• Duplicate entries eliminated when calling from the call history in the client interface of the 3CX lient

Download the latest 3CX Client for iOS from here .

3CX SBC for Debian Linux

As you know, 3CX is a multi-platform system running on Windows, Linux Debian 8 and cloud infrastructure. It is logical to expect the same multiplatform from its important addition - 3CX SBC (border controller sessions). And the latest version of 3CX SBC now supports Linux Debian 8! Linux support for 3CX SBC was requested by many of our clients and partners, and we fulfilled their wishes.

In addition to support for Linux, the new version significantly improves the quality of transmitted sound (on Windows, Linux and Raspberry Pi), and also implements multi-stream processing of traffic on the Raspberry Pi. Multi-threaded processing allows you to handle more simultaneous calls and support more BLF indicators on phones. Testing confirms steady operation of 20 IP phones with configured 10 BLF indicators on each (phones are connected to the 3CX head server via the Raspberry Pi device). Of course, testing involves high-quality Internet channels, both from the 3CX server and in the remote office.

Using 3CX SBC

3CX SBC is used to connect remote users to the 3CX PBX server in the head office. It is important to note that you do not need to purchase any additional licenses to install SBC. It is enough to install one “big” PBX 3CX in the central office, and the rest of the offices for free combine with it into a single communication system. This is much cheaper than buying a 3CX license for each branch.

However, why not connect IP phones directly to PBX via the Internet, without using SBC? The fact is that with such a connection, VoIP traffic will pass through many firewalls and routers, which can not only affect the sound quality (create delays), but also make the connection setup itself impossible, since change the headers of SIP packets. The 3CX SBC encapsulates VoIP traffic into a virtual tunnel, allowing it to transparently pass through almost any network device.

Why we released SBC for Debian Linux

Until the last update, you could install 3CX SBC either on a Windows computer or on a Raspberry Pi device. Both of these solutions have some drawbacks:

• 3CX SBC for Windows must work on a computer with a Windows license and certain minimum system requirements. It is subject to virus attacks and can simply fail. If this computer does not work, the connection does not work either.
• 3CX SBC for Raspberry Pi requires the purchase of a device for $ 80-90, which has a rather limited performance. As a rule, it can accommodate no more than 5-10 IP phones. If each phone has a group of BLF indicators and, say, 300 employees work at the head office, then the traffic of BLF notifications (NOTIFY) can completely load the processor of the device. Due to these limitations, it will still have to be replaced over time.

3CX SBC for Debian Linux elegantly solves both of these problems. It allows you to run a full-fledged OS with minimal system requirements - right in a virtual machine on an existing server or desktop PC! Instead of a virtual machine, you can use this full (and this is important!) Linux computer .

New update features of 3CX SBC for Debian Linux

• Debian 8 x64 OS Support
• Improved audio quality
• Added multi-stream audio processing (on RPi2 and RPi3 devices only)
• Transmit RTP stream over UDP to reduce jitter
• Improved traffic encryption, fixed some bugs in this area.
• Automatic detection of changes in the public IP address of the SBC server, including the corresponding migration
• Automatically reconnect to 3CX server
• RTP Voice media streams are assigned the highest priority.
• Improved transmission of keep alive packets
• Fixed a bug causing spurious UDP traffic

Supported Raspberry Pi devices

• Raspberry Pi 1 Model B, B +
• Raspberry Pi 2 Model B
• Raspberry Pi 3 Model B

Differences between SBC V14 and V15

• Improved audio quality
• The number of serviced IP phones at a remote office (for Raspberry Pi) increased 4 times (from 5 to 20)
• Added support for Debian Linux OS
• Improved security
• There is an automatic reconnect feature in the 3CX server
• Improved stability

Downloads and Documentation

• 3CX SBC documentation
• Installing 3CX SBC for Windows
• Installing 3CX SBC for Raspberry Pi and Debian
• Download 3CX SBC for Windows