Wholesale Voice and VoIP for Carriers
Wise Network buys and sells international voice minutes with carriers, ITSPs and voice aggregators over SIP, using its own routing and billing platform. We have worked in wholesale voice since the early days of VoIP.
What is wholesale VoIP?
Wholesale VoIP is the bulk exchange of voice traffic between carriers over IP, usually using SIP. One carrier sends outbound calls to another that can deliver them to the destination network (termination), or receives calls destined for its numbers (origination). Traffic is priced per minute by destination, and the carriers settle against call detail records (CDRs) rather than retail tariffs.
What we do in wholesale voice
Wise Network has been part of the international voice market since 2003. Over that time our voice business has grown from early VoIP and SIP routes into a portfolio of wholesale and retail routes, built on demand from our carrier partners and run on our own routing and billing platform.
- Voice terminationOutbound A-Z international routes, premium and standard. Voice termination
- Voice origination and DIDsInbound traffic and numbers delivered to your network. Voice origination
- SIP interconnectionHow carriers connect their switch to ours. SIP interconnection
- Wholesale voice aggregationWe combine traffic from many carriers and buy from many suppliers, so partners reach more destinations through one interconnect.
Termination, origination and interconnection
Termination and origination are the two directions of a voice call between networks. Termination carries a call out of your network to its destination; origination brings calls dialled to your numbers into your network. Most carriers buy both, often on the same SIP interconnection.
| Service | Direction | You pay for | Typical buyer |
|---|---|---|---|
| Voice termination | Outbound, your network to the destination | Minutes, by destination | Carriers, ITSPs, aggregators |
| Voice origination | Inbound, callers to your numbers | Numbers (DIDs) and inbound minutes | Carriers, CPaaS, contact-centre platforms |
| SIP interconnection | Both | The connection itself is set up once | Every voice partner |
Premium and standard routes
Every destination we sell is offered as a defined route type. Premium routes are selected for quality and reliable caller ID delivery. Standard routes are selected for price with acceptable quality. Routes are tailored to each carrier's top destinations, quality requirement and target rate, and the route type is stated on the rate deck.
Wholesale voice aggregation
Aggregation means pooling: we receive traffic from many carriers and hold supply relationships with many terminating partners. For a buyer, that means one interconnect, one contract and one invoice for many destinations. For a seller, it means access to our traffic without negotiating with each originating carrier.
Routing, LCR and billing on our own platform
Our proprietary billing and routing platform runs the voice business end to end:
- Least-cost routing (LCR) selects a supplier per call by destination, route type, price and quality rules.
- Live CDR generation records every call, so both sides reconcile on the same data.
- Live billing rates traffic as it happens rather than at the end of the period.
- Web access lets partners check traffic and statements, with multiple access levels for their teams.
Quality monitoring
Wholesale voice quality is measured with a few standard indicators, which we track per destination and per supplier:
- ASR (answer-seizure ratio)
- The share of call attempts that are answered.
- ACD (average call duration)
- Short averages can signal poor audio, false answer supervision or a broken route.
- PDD (post-dial delay)
- The time between dialling and hearing ringing.
- CLI delivery
- Whether the caller's number reaches the called party unchanged, which matters for premium routes.
When a route degrades, traffic is moved to an alternative supplier by the routing rules.
Fraud controls on voice traffic
Voice routes are also targets for fraud, including SIM box bypass on termination and artificially generated traffic. Our experience building telecom security products informs how we monitor our own routes.
Who it is for
Wholesale carriers, international telecom operators, ITSPs and VoIP service providers, voice aggregators, and platforms that need inbound numbers for their customers.
Frequently asked questions
What is the difference between premium and standard routes?
Premium routes are chosen for call quality and caller ID (CLI) delivery, typically through direct or tier-one paths. Standard routes are priced for cost with acceptable quality. We tell you which you are buying for each destination; they are not mixed silently.
Do you sell VoIP termination to small businesses?
Our wholesale service is for carriers, ITSPs, aggregators and other licensed voice businesses that interconnect switch to switch. We do not sell retail calling plans.
Which protocols do you support?
Voice interconnects use SIP over IP. Codec, signalling and capacity details are agreed during onboarding; see SIP interconnection.
Do you carry traffic to every country?
We carry traffic to international destinations except countries and parties under UN, US (OFAC), EU or UK sanctions. Ask us for the current list of destinations for the route type you need.
Related
Exchange voice traffic with Wise Network
Tell us the destinations you buy or sell, the route type you need and your expected monthly minutes. We will reply with technical requirements and rates.
- Email: sales@wisenetwork.co
- Phone: +961 3 085 999