Wholesale VoIP Termination
Termination is the leg that hands your call off to the destination network. Buy it well and your margin and your answer rates both improve. Buy it badly and you find out via customer complaints.
What wholesale VoIP termination actually is
You send SIP traffic to our session border controllers. We route each call to the destination network — either directly, where we hold an interconnect, or via a transit partner. You are billed per minute, per destination prefix, against a rate deck.
The word 'wholesale' is doing real work here. Retail VoIP sells you an extension with a monthly fee. Wholesale sells you termination capacity you resell or consume yourself, priced per destination, with no seat count anywhere in the contract.
A-Z termination
A-Z means we quote every destination, not a convenient subset. A rate deck covers the full prefix range with a rate against each — mobile and fixed split out, because they price very differently in most countries.
In practice nobody buys all of A-Z. You buy the twenty destinations that carry your volume and you care intensely about those. The rest is there so you are not re-contracting every time a customer sends traffic somewhere new.
Direct routes versus transit
A direct route means we interconnect with the terminating network. Fewer hops, better CLI delivery, lower post-dial delay, and the price reflects it.
Transit means the call crosses one or more intermediate carriers. Cheaper, and for a lot of traffic entirely fine. The failure mode to watch is a route sold as direct that is actually three hops of transit — it shows up as CLI being stripped and PDD climbing.
How to evaluate a termination supplier
Test, do not read. Ask for a trial account and send real traffic to your real destinations for a week.
Watch ASR and ACD per destination, not in aggregate — one bad country hides easily inside a healthy blended number. Watch post-dial delay. Check whether your CLI arrives intact. Then compare that against the rate, because a cheap route with a low answer rate is not cheap.
Frequently asked
Frequently Asked Questions
Retail VoIP is sold per user per month with a phone system attached — extensions, voicemail, an app. Wholesale VoIP is sold per minute per destination with nothing attached but the route. Wholesale buyers are carriers, call centres and resellers who either resell the minutes or consume them in their own dialling operation. The commercial shape is completely different: rate decks and prefixes rather than seats and licences.
A-Z termination means the supplier quotes a rate for every destination prefix worldwide rather than a selected list. It is delivered as a rate deck — a file listing destination names, dial prefixes and per-minute rates, usually with mobile and fixed-line broken out separately. In practice most buyers concentrate on a handful of destinations that carry their volume, but A-Z coverage means you are not renegotiating each time traffic appears somewhere new.
Per minute, per destination, against the rate deck in force. The billing increment matters as much as the headline rate: 1/1 billing charges actual seconds, while 60/60 rounds every call up to a full minute. On short-duration traffic the increment can move your effective cost more than the rate does. Always confirm the increment and any minimum duration before comparing two rate decks.
Yes — send real traffic to your real destinations rather than evaluating on paper. [HUMAN: confirm trial terms — credit limit, duration, prepay requirement.]
SIP over UDP, TCP and TLS, with RTP media. G.711 and G.729 are the common codecs for wholesale traffic; G.711 costs more bandwidth but survives transcoding better. [HUMAN: confirm supported codec list, TLS/SRTP availability and whether transcoding is offered.]
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