Since its release, Acrobits Softphone has become synonymous with SIP on the iPhone. Starting with push notifications and continuing with the G.729 Annex A audio codec and multitasking.

 

Acrobits has made sure users of the Softphone have a reliable, highly customizable SIP Client that utilizes all the latest capabilities of iOS. Join thousands of satisfied customers now and try Acrobits Softphone, the leading SIP Client on the App Store.

 

Features

 

Push Notifications, a reliable way to receive calls when Acrobits Softphone is closed

Customizable ringtones, choose from our selection or pick something from your iTunes library

HD wideband audio through G.722

Excellent sound quality, includes the G.711, GSM and iLBC audio codecs.

Number rewriting, enabling you to utilize your existing contacts without having to create new entries to satisfy the dialing requirements of your PBX or SIP provider

Address Book Matching to automatically format your incoming numbers to match your existing contacts

TLS support for encrypted SIP

SRTP, both SDES and ZRTP for secure audio on SIP calls.

Bluetooth support for iPhones with OS 3.1 and higher (please note that the iPad and iPod Touch do not support Bluetooth Hands Free)

Audio codec manipulation, enabling you to prioritize the codecs used and disable ones you don't want to use.

Call recorder and player, seamlessly integrated into the call history

Comfortable and super-smooth user interface, fine-tuned specially for the iPhone

Full localization (currently English, Chinese, Danish, Korean, Norwegian, Polish, Portueguese, Swedish, French, German, Italian, Russian, Spanish, Czech and Slovak)

Very Easy Configuration

Simultaneous registration of multiple SIP accounts, have multiple accounts registered to receive incoming calls and switch the account used for outgoing calls without leaving the keypad

iPhone contacts integration, easy to call anyone in your contact via SIP

Contacts search function

Add new contacts directly from Groundwire

Quickdial, your 12 favorite contacts are one touch away

Ability to generate DTMF tones while in call, to control various PBX features or automated systems (use audio, rfc2833 or SIP INFO)

Speakerphone support

Detailed call history, with intelligent call grouping for an easy overview

Support for sip:username URIs in contacts

Configurable RTP port range

SIP Proxy support, VPN support

Phone number resolution, we present the phone numbers in a convenient format with grouped digits, display the flag and country name and even the region/city name for some countries, including USA

Remember, Acrobits Softphone is a SIP client. You will need to have service with a VoIP provider or PBX that supports use on a standard SIP client to use it.