IP Commander for iOS vs Castel SIP

IP Commander for iOS allows you to make, receive, forward, transfer, conference and manage phone calls from your iPad while docked on your Communicator once it is configured and registered to a compatible voice over Internet service (VoIP). **IMPORTANT NOTE: IP Commander, used in conjunction with the Communicator, is a standalone SIP phone, and not a VoIP service. A IP-PBX/SIP server connection or subscription with a SIP-based VoIP provider is required to make or receive calls with IP Commander for iOS. IP Commander for iOS enables you make and receive HD voice calls from your home or office. Dialing from address book on the iPad is a breeze. And you can add phone numbers and contacts from the IP Commander call logs to your iPad address book. IP Commander simplifies calling family, friends and business associates while providing convenient call management features such as programmable buttons, forwarding, three way calling, customizable music on hold, etc. iDevices Supported : iPad, iPad2, and the new iPad. This version is only compatible with iOS 5 and iOS 6. Audio Path Control: To enable IP Commander on your Communicator, navigate to the Audio System Control panel in the app while your iPad is connected and turn on Enable Commander and set the Audio System Control preference to Commander. Audio/Voice connection can go thru both Bluetooth™ or 30-pin connector to Communicator dock. Supported Audio Interfaces: Headset port with microphone Wide band Handset Speakerphones Supported Phone Features: Single account support for any SIP-compliant service or IPPBX server Multi-tasking support for background operation, such as fielding incoming calls or talking on a call while using other applications on your iPad. Call display and voicemail message waiting indicator Speakerphone, mute and hold operation and indication Call history – list of received, missed and dialed calls Uses iPad Contact List Ringtones and contact avatars Multiple call support : swap among calls, merge calls and transfer calls Call forwarding : Always forward, Busy forward, No answer forward and Do not disturb (DND) forward 3-way conferencing Voice Mail function Programmable Dial plan support Phone lock / unlock Hot line Sound quality : Noise reduction, Gain Control and VAD (Voice Activation Detection) , AEC (Acoustic Echo Cancelation) Audio codecs include G.722 (HD), G.711, and G.729 Support for DTMF: the ability to enter numbers in PBX, IVR or an Auto-attendant via RFC 2833, SIP INFO or in-band method VPN support VLAN support Quality of Service: ToS Marking and DSCP (Differentiated Services Code Point) NAT Traversal: configurable STUN and SIP ping clients, DNS SRV support Security and Encryption: TLS and SRTP

Castel SIP App is a SIP intercom softphone. The easy-to-use and intuitive application, allows you to make and receive audio and video calls from IP intercom stations (XELLIP, CAPIP...) on your iPhone or iPad. With Castel SIP App, you can communicate and open the door, anywhere. It works with the Castel Cloud SIP server through Wi-Fi and 3G/4G/5G. Main features: - Audio and video calls with advanced functionalities (Loudspeaker, transfer calls, hold...) - Address book with favorites - Call history - Remote commands during calls and DTMF - Support landscape and portrait mode for all smartphone and tablet designs (camera notch...) Note: Please, check your cellular operator's terms of agreement to make sure they allow SIP calls on their network before using Castel SIP App.