Route types
The route type tells you how the call reaches the destination. CLI routes keep the calling number intact, which matters for callbacks and for answer rates. White routes are fully carrier-sanctioned. Grey routes are cheaper and less predictable, and are restricted or outright illegal in a number of markets — the offer must state the type and you are responsible for whether you may use it.
- CLI: number preserved, best for anything that expects callbacks
- White: carrier-legal, stable signalling, higher rate
- Grey: lowest rate, unstable, legally restricted in many countries
Quality figures that actually matter
ASR shows how many attempts get answered, ACD how long calls last, and PDD how long the caller waits before ringing. Read them together: a high ASR with a two-second ACD usually means false answer supervision rather than a good route. Capacity in CPS tells you whether the route survives your dial rate.
- ASR — answer-seizure ratio, per destination
- ACD — average call duration, a sanity check on ASR
- PDD — post-dial delay, audible to your callers
- CPS — calls per second the route accepts
Billing increment and codecs
Per-minute price only means something next to the increment. 1/1 billing charges actual seconds; 60/60 rounds every call up to a full minute. Codec support decides audio quality and bandwidth: G.711 for clean audio, G.729 where transit is tight.
Testing and delivery
On delivery you receive the SIP host, port and authentication for the route in your order page, unlocked once escrow is funded. Where a test is offered, use it before committing volume — you learn more from ten live calls than from any rate sheet.
When a route degrades
Routes go bad; that is normal in wholesale voice. What matters is recourse. Usage records and the seller's stated figures are both visible in the order, so a dispute is judged on evidence, and sellers with repeated failures are suspended from listing.