PulseSIP VoIP Softphone

PulseSIP turns your iPhone into a full-featured SIP desk phone — no dedicated hardware required. Connect to any standard SIP server, Asterisk PBX, or hosted VoIP provider and start making calls in minutes.

FEATURES:

Reliable Calling

• Register with any SIP server using standard credentials

• Make outgoing calls by typing a number or full SIP URI

• Full-screen incoming call screen with Answer and Decline

• Auto-registers on launch so you're always reachable

Professional In-Call Controls

• Mute microphone with a single tap

• Hold and resume calls using SIP re-INVITE

• In-call DTMF keypad for navigating IVR menus and phone trees

• Real-time call duration timer

Maximum DTMF Compatibility

PulseSIP sends DTMF tones three ways simultaneously — RFC 2833 (out-of-band

RTP), SIP INFO, and inband audio — ensuring reliable digit delivery regardless

of your server's DTMF mode setting.

Call History

• Recents list with incoming, outgoing, missed, and declined calls

• Tap any entry to call back instantly

• Swipe to delete individual entries or clear all history

NAT & Network Traversal

• Built-in STUN support

• ICE (Interactive Connectivity Establishment) for complex NAT scenarios

• DNS SRV lookup for enterprise SIP deployments

Native & Lightweight

• Built entirely in SwiftUI with a clean, familiar iOS interface

• No CallKit — works without special entitlements or carrier agreements

• Credentials secured in the iOS Keychain

• No subscriptions, no accounts, no tracking

WHO IS IT FOR?

PulseSIP is designed for developers, IT administrators, and power users who

need a straightforward SIP client to test and use VoIP infrastructure —

whether that's an Asterisk server, FreePBX, Kamailio, or any other

standards-compliant SIP registrar.

REQUIREMENTS

• An active SIP account with a registrar server

• iOS 18 or later

• Wi-Fi or cellular data connection