EW Polyphone
Telecom Messenger
Retain subscribers while roaming, monetize international calls, and compete with OTT services through your own operator-branded messenger.
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What challenges does EW Polyphone solve for telcos
Retaining roaming subscribers
Offer attractive call rates to home with our app. Boost both service usage and subscriber activity while they’re abroad.
Enhancing network coverage
Ensure reliable communication even in low-coverage areas and during roaming. OTT calls and messages can be delivered via Wi-Fi or mobile internet without quality loss.
Revenue from OTT service
Monetize app-to-GSM and GSM-to-app calls, earn commissions from payment transactions, and generate income from partner services.
Growing your subscriber base
Attract customers from other operators by issuing virtual numbers and converting them into full subscribers of your network.
Why EW Polyphone
A digital ecosystem for subscribers
Customization
Communication channel
Multi-platform support
Security & privacy
The EW Polyphone Ecosystem
OTT calls
- In-app calls and calls to any GSM numbers
- Video calls and conferences
- Affordable roaming via Wi-Fi, 3G, LTE
Telecom Messenger
- SMS from the app to GSM numbers
- Private and group chats
- Photo, video, file, and location sharing
- Voice messages
Subscriber Self-Service
- Manage services and top up balance
- View usage details and payment history
- Contact support directly via chatbot
Financial Services
- Subscriber e-wallet
- Bank card integration
- Money transfers, bill payments, and online purchases
FAQ
Who can use EW Polyphone?
Any subscriber—whether they are your current customer or with another operator—can use the telecom messenger functionality.
Where can subscribers download the app?
We prepare and publish it on Google Play and the App Store. On request, we can also upload it to vendor stores such as Huawei, Samsung, Xiaomi, and more.
How do subscribers register?
Your subscribers are automatically registered by their phone number with SMS verification. Users from other networks can register a virtual number directly in the app to access OTT calls and services.
How long does implementation take?
For IP-only services (in-app communication), it takes about 2 weeks once we have infrastructure access. If integration with operator systems is required (Media Gateway, HLR, OSS/BSS), it can take from 4 weeks.
What are the technical requirements?
The platform integrates with operator infrastructure via open protocols (HTTP, SIP, SMPP, DIAMETER) and supports all major billing systems.
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