Carrier-Grade Quality
Reliable connections on a network built for wholesale traffic, with call quality monitored across routes.
/wholesale-voice
Wholesale Voice
Wholesale Voice Services for Resellers & Call Centers
DID & toll-free numbers, SIP trunking, and UCaaS/CPaaS voice on one wholesale relationship — built for resellers, call centers, and platforms that run their own voice product through a single provider. Looking for carrier-to-carrier termination? See our wholesale VoIP provider page.
DID & Toll-Free NumbersSIP TrunkingUCaaS & CPaaS VoiceWorldwide Coverage
Your voice stack
DID & toll-free numbers
Local presence and porting on request
SIP trunking
For your PBX or contact center
UCaaS & CPaaS voice
API-based and white-label ready
Outbound termination
Included with your account
One wholesale relationship for the voice layer behind your product or contact center.
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Why Industry Leaders Choose Rozper
Transparent Pricing
Clear per-minute pricing with volume-based discounts, shared in your rate deck.
Global Reach
Call termination to destinations worldwide through our carrier interconnect network.
Expert Support
Wholesale enquiries are handled by our carrier team. Contact us for routes and rates.
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Discover Our Key Wholesale Voice Solutions
DID & Toll-Free Numbers
Establish a local presence with DID and toll-free numbers in many countries.
Local Presence
Numbers worldwide
Fast Activation
Quick provisioning
Number Porting
Available on request
Geographic Coverage
Local DIDs where available
SIP Trunking
Connect your IP-PBX with flexible, scalable wholesale SIP Trunking — keep your existing hardware.
Seamless Scalability
Grow on demand
Cost Savings
vs. legacy PSTN
Easy Integration
All major PBX
Advanced Features
CLI, recording, LCR
UCaaS & CPaaS Integration
Embed our dependable voice infrastructure into your UCaaS or CPaaS platform via API.
API Integration
REST & SIP
White-label Ready
Your brand
Custom Development
Dedicated team
Full Support
Engineer access
Outbound Termination, Included
Outbound calling to destinations worldwide comes with your account. Need carrier-to-carrier A-Z interconnection and per-route control instead? See our wholesale VoIP provider page.
Global Reach
Worldwide destinations
Quality Routes
Monitored per route
Clear Pricing
Per-minute rates
Real-time Analytics
Live route reporting
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Complete Control with Advanced Technology
Smart Routing
Advanced algorithms evaluate network conditions, costs, and quality metrics in real time — every call takes the most efficient path automatically.
Real-time Analytics
Intuitive dashboards with instant insights into call quality, volume, costs, and performance across all destinations — live, not in a monthly PDF.
Fraud Detection
Monitoring watches traffic patterns and flags anomalies, so suspicious activity can be stopped before it reaches your network.
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Which wholesale page do you need?
Each page answers one question. Pick the one that matches what you are trying to do.
Wholesale VoIP
Carrier interconnection
For carriers, ITSPs, telecom aggregators, and mobile network operators moving traffic between networks.
- A-Z termination and direct SIP interconnects
- Route-level quality control: ASR, ACD, PDD, and CLI
- Fraud monitoring and alerts on your routes
VoIP termination
How termination works
For anyone sending outbound calls to the public phone network and choosing between route types.
- CLI, non-CLI, TDM, and GSM routes compared
- Quality metrics from dial to answer
- How to choose a termination provider
Wholesale VoIP rates
Per-minute rates & rate decks
For buyers pricing a route: how wholesale rates are quoted and what a rate deck contains.
- What sets the per-minute rate
- Billing increments such as 6/6 and 60/60
- How to request a deck for your destinations
Wholesale voice services
Numbers, trunks & platform voice
For resellers, call centers, and UCaaS or CPaaS platforms that run their own voice product.
- DID and toll-free numbers in many countries
- SIP trunking for your PBX or contact center
- API and white-label voice for your own platform
Still comparing providers? Use our checklist: 25 questions and a weighted scorecard for evaluating any wholesale VoIP provider.
Related guides
- Wholesale Voice by Industry: Contact Centers, Healthcare, Finance & TravelWhat each industry needs from a wholesale voice provider.
- Voice Termination Rates: How Pricing Models, Routes and Fraud Affect CostThe same topic from the voice side, including pricing models.
- What Wholesale VoIP Services Are, What They Cost and How to Choose OneThe buyer's overview: benefits, features to look for, and pricing models.
- Wholesale VoIP Providers: How to Choose One, With a 25-Question ChecklistProvider models, pricing, and a scorecard for comparing providers on the same criteria.
Frequently Asked
Questions about wholesale voice.
What resellers, call centers, and platform teams ask before choosing Rozper for wholesale voice.
Wholesale VoIP offers bulk rates for carriers and large-scale users, while retail VoIP caters to individual customers with a focus on user-friendly services. Wholesale buyers get carrier-grade pricing and direct interconnects — retail buyers get a polished end-user experience.
A-Z Termination is the process of completing international calls from any origin (A) to any target destination (Z), ensuring global connectivity. Rozper maintains direct carrier interconnects for end-to-end delivery to destinations worldwide.
Yes — our SIP Trunking connects directly to your existing IP-PBX over a standard SIP/TLS link. No hardware replacement needed.
Call quality is measured with ASR, ACD, and PDD. You can set quality thresholds per route, and traffic can be re-routed when a route drops below them, with alerts so your team knows straight away.
Our infrastructure is built to scale with your traffic. Start on a trial corridor, prove the quality, and grow from there. Volume-based pricing rewards growth.
They overlap but serve different buyers. Wholesale voice services, on this page, are for resellers, call centers, and UCaaS or CPaaS platforms that run their own voice product: DID and toll-free numbers, SIP trunking for a PBX or contact center, and API-based voice. Wholesale VoIP is carrier interconnection: A-Z termination, SIP interconnects, and route-level quality control for carriers, ITSPs, aggregators, and mobile network operators.
Rozper provides DID and toll-free numbers in many countries, with local DIDs where available. See the country pages for what is available. Number porting is available on request.
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Get a Custom Rate Card
Share your traffic details — we'll respond with a tailored A-Z rate deck.
Request a Rate Card
Route your traffic through a carrier-grade network.
Direct A-Z routes, secure SIP interconnections, and a team that answers when quality drops.