SIP Trunks

The virtual equivalent of the traditional phone line, SIP Trunking (Session Initiation Protocol) is a connection to the Public Switched Telephone Network (PSTN) which makes use of your Internet connection and integrates voice, video data and Internet services into one single line. In essence, it is the process by which this technology is applied to VoIP systems since SIP trunks replace traditional telephony trunks.

Why use SIP trunking? Much inexpensive than the old analog circuits that traditional enterprise phone systems customarily use, a SIP trunk can maintain or even exceed the level of call quality, it provides enhanced communications to IP networks and legacy systems alike, while it is totally customisable.

Wondering how to get started?

Catering for both small and large application, we can provide single or unlimited SIP trunks. A single channel trunk allows only ONE call (either incoming or outgoing) at any one time, whereas an unlimited channel allows unlimited simultaneous outgoing calls and up to 10 simultaneous incoming calls per DID. Maintain your professional presence and cut down on the cost and rigidity of older phone systems with our SIP trunks.

Have a look at our comprehensive explanation of SIP Trunks.

We have ensured that setting up your system and having it up and running is a breeze. All you need is an Internet connection, a SIP phone or ATA and your Cempilli account. Use our service immediately by following these easy steps.

Step 1

Click on the ‘Sign up now’ button to create a Cempilli account

Step 2

Connect your phone with a SIP


You can get started right away making low cost calls worldwide.

Contact us

For our unlimited SIP trunks service kindly contact us on

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Simply put, SMPP is used to send and receive messages from and to GSM, UMTS, iDEN, CDMA and TDMA cell phones.

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