Calling App (Dialer) Using PortSIP SDK Project in Android

Project Title: Calling App (Dialer) Using PortSIP SDK

Submitted by: thakurnirbhay
Platform: Android

Project Description:

This Android application allows users to make voice and video calls using the PortSIP VoIP SDK, which provides robust SIP (Session Initiation Protocol) support for softphone functionalities.

It acts as a custom dialer, replacing or supplementing the native Android dialer app, but with extended capabilities to make VoIP calls over the internet rather than traditional GSM/CDMA networks.

Key Features:

• SIP-based Calling (VoIP): Enables high-quality voice and video calls over the internet using SIP protocol.

• Video Calling Support: Integrated video streaming using the PortSIP SDK.

• Contact Integration: Allows selection and calling from phone contacts (if implemented).

• Audio Control: Mute, speakerphone, and hold functions during calls.

• Secure Communication: Uses PortSIP’s support for SRTP and TLS for secure calling (if configured).

• Call Logs/History: Records outgoing, incoming, and missed calls (optional).

• Registration with SIP Server: App registers to a SIP server using user credentials.

Technical Stack:

• Language: Java / Kotlin

• SDK: PortSIP VoIP SDK (Android version)

• UI: XML layouts with Android Material Components

• Network: SIP over UDP/TCP/TLS

Possible Use Cases:

• Internal office communication systems

• Call center or customer service apps

• VoIP communication apps (alternative to Skype or WhatsApp)

• Integration in healthcare, security, or enterprise mobile tools

Learning Outcomes:

• How to implement SIP-based VoIP in Android

• Real-time communication principles

• Using third-party SDKs (PortSIP) in mobile development

• Handling multimedia streams on Android

• Secure communication practices