Challenge
Sales teams needed a branded softphone with reliable audio and deep CRM links — without a heavy native rewrite.
Case study · 2024
Communication & VoIP
A Flutter softphone for modern workspaces
FlutterVoIPTelephonyREST APIsUI/UX
Client
Sales enablement SaaS
Engagement
Flutter softphone product
Duration
6 months
Year
2024
Orbit Softphone gave sales teams a branded calling experience with CRM context — without a heavy dual-native rewrite. Flutter UI shells wrap a native VoIP core for HD audio, while presence sync and secure token exchange power click-to-dial from CRM embeds on Android and iOS.
Cross-platform softphone with VoIP calling, presence, and CRM click-to-dial — built in Flutter for desktop-class UX on mobile.
Narrative
How the engagement moved from constraints to a shippable system.
Approach
We built Flutter UI shells around a native VoIP core, with presence sync and secure token exchange for CRM embeds.
Solution
Orbit Softphone delivers HD calls, transfer/hold, and one-tap CRM context on Android and iOS.
Scope
What we delivered
Flutter softphone for Android and iOS
Native VoIP core integration (audio path)
Presence and transfer/hold flows
CRM click-to-dial embeds and token exchange
Shared design language with the web console
Field MOS scoring and QA scripts
Highlights
What stood out
Average MOS above 4.1 in field trials
CRM click-to-dial adopted by 80% of seats
Desktop-class UX patterns on mobile
Consistent branding with existing admin console
Engagement flow
A repeatable rhythm from discovery through hardening — tuned to this product’s constraints.
01
Audio path spike
Validated native VoIP core options against MOS and battery targets.
02
Flutter shell
Built call UI, presence, and CRM deep links around the core.
03
CRM integration
Secured token exchange and click-to-dial embeds for top CRM packs.
04
Field trials
Ran MOS scoring with real sales seats and iterated on drop cases.
Technology stack
The delivery stack behind this engagement — client surfaces paired with services, data, and infrastructure.
Frontend / Mobile
FlutterDartNative VoIP BridgeUI/UX
Backend
REST APIsPresence ServiceCRM Webhooks
Realtime
VoIPTelephony SignalingSecure Token Exchange
Outcomes
01
Average MOS score above 4.1 in field trials
02
CRM click-to-dial adopted by 80% of seats
03
Shared design language with the web console
Looking ahead
Ship desktop softphone parity and richer post-call CRM notes.
More work
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