Zoiper
Free + Pro versions. Cross-platform (Windows, macOS, Linux, iOS, Android). Best general-purpose softphone for DIDHub.
DIDHub for softphones
Use any DIDHub number with any softphone client. Five-minute setup with SIP credentials. Works on Zoiper, Groundwire (Acrobits), Linphone, MicroSIP, Bria, Grandstream Wave, and any RFC-compliant SIP softphone.
Why DIDHub + softphones
The simplest way to use a DIDHub DID is on a softphone — desktop or mobile app that registers as a SIP endpoint and lets you make/receive calls directly. No PBX, no Asterisk install, no Microsoft 365 tenant. Just a DIDHub DID and a SIP client.
This is the canonical setup for: solo professionals who want a business number on their phone, small teams that don't need a full PBX, AI voice agent developers testing routing, and anyone who wants to verify a new DIDHub DID end-to-end before configuring something more complex.
Setup — 5 minutes
Five steps from a brand-new DIDHub DID to a registered softphone, regardless of which app you use.
Sign up + buy a number
DIDHub account, buy a DID in your country.
Get SIP credentials
DIDHub dashboard → DID → SIP credentials. You get: username, password, server (sip.didhub.io), domain (sip.didhub.io).
Install your softphone
Pick from the list below. Most are free for personal use, paid for commercial.
Add a SIP account
In the softphone, add a new SIP account with the DIDHub credentials. Transport = TLS (port 5061) recommended.
Test
Place a call out from the softphone (uses your DIDHub DID as Caller ID). Have someone call into the DID — the softphone rings.
SIP trunk configuration
The exact trunk values DIDHub provisions for your account. Pre-fill these in the softphones trunk-config UI:
# Universal SIP account values from DIDHub Server / Domain: sip.didhub.io SIP Port: 5061 (TLS — recommended) or 5060 (UDP) Username / Auth ID: didhub_xxxxxx Password: (provisioned, rotate via dashboard) Outbound proxy: edge.didhub.io Display name: "Your Name" or "Your Co" Codecs: PCMU (G.711μ-law), PCMA (G.711 a-law), OPUS DTMF: RFC 2833 / RFC 4733 NAT: STUN auto / ICE recommended on mobile clients Encryption: SRTP (DTLS or SDES) — required on TLS
Most softphones have an "Advanced" or "Network" tab where you set transport, NAT, and codec preferences. For mobile softphones (iOS/Android), enable push notifications if the app supports them — this lets DIDHub deliver calls even when the app is in background.
Capabilities verified with softphones
Groundwire (Acrobits)
Premium iOS & Android softphone. Excellent push-notification handling so calls reach you reliably with the app backgrounded. Strong G.722/Opus support, ZRTP/SRTP encryption, ZeroLag echo handling. Popular with mobile-first business users who want reliable inbound on the go.
Linphone
Open-source. Cross-platform including web. Strong privacy story. Good for tech-savvy users.
MicroSIP
Windows-only, lightweight. Single SIP account. Best for desktop-only solo use.
Bria (CounterPath)
Premium commercial softphone. Strong call quality, contact-center features. Cross-platform. Per-seat license.
Grandstream Wave
Free, by Grandstream. iOS + Android. Pairs naturally with Grandstream IP phones.
CSipSimple (legacy)
Open-source Android softphone. No longer actively maintained but works with DIDHub.
Native iOS / Android SIP
iOS doesn't expose native SIP; use Zoiper/Linphone/Bria/Groundwire. Android (some OEMs) exposes native SIP — Settings → Calls → Internet calling. Not recommended; quirky NAT and codec support.
WebRTC / browser softphones
DIDHub supports WSS (Secure WebSockets) for browser-based SIP softphones. Test with sipML5, JsSIP, or any custom WebRTC client.
Frequently asked questions
Which softphone is best for me?
Zoiper Pro for most users — fast, cross-platform, well-supported. Groundwire for mobile-first business users on iOS or Android (best-in-class push notifications and call quality). Linphone if you prefer open-source. Bria for serious business use with multiple SIP accounts and contact-center features. MicroSIP for Windows-only minimalist setups.
Does this work on iPhone?
Yes — install Zoiper, Linphone, or Bria from the App Store; add the DIDHub SIP credentials. Enable push notifications if available so calls reach you when the app is backgrounded.
Can I receive calls when the softphone is closed?
Mostly yes on iOS/Android with push-enabled softphones (Zoiper Pro, Bria). On desktop, the softphone needs to be running.
Does the softphone use my mobile minutes?
No — calls go over data (Wi-Fi or cellular data). It's VoIP, not cellular voice.
How do I improve call quality?
Use TLS+SRTP (port 5061), enable Wi-Fi if available, set codec preference to OPUS first then G.711. Most quality issues are network — if your Wi-Fi is poor, switch to cellular data.
Can I run multiple DIDHub DIDs on one softphone?
Yes. Zoiper, Groundwire, Bria, and Linphone all support multiple SIP accounts. Add each DIDHub DID as a separate account.
Related
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