Glossary
Short, plain definitions for the terms used everywhere else in this wiki. Each one links to the page that covers it in depth.
| Term | Meaning |
|---|---|
| DID | A real phone number from a carrier ("Direct Inward Dialing") that routes into this system — to a device, ring group, queue, IVR menu, or a forwarding rule. See What a DID is. |
| LCR | A named routing plan: an ordered list of providers tried, in turn, for a user's outbound calls, plus an optional failover provider used only once the regular list is exhausted. Short for "Least Cost Routing". See LCR: routing strategy and failover. |
| Tariff | A price list made up of individual rates — either what a customer is charged (a sell/user tariff) or what a provider charges this system (a buy/wholesale tariff). See Tariff types. |
| Rate | One entry inside a tariff: a destination prefix with a per-minute price, connection fee, billing increment and minimal call time. See Rates, rate details and destinations. |
| Prefix | The leading digits of a phone number that identify its country or destination — what a rate is actually matched against when a call is priced. |
| CDR | Call Detail Record — the stored record of a single call (numbers, time, duration, price, hangup cause). The Calls list is a view over these records. See CDR management. |
| Extension | A short internal number (e.g. 1010) used to dial a device, ring group, queue or IVR block directly within the system, without going through a full outside number. |
| Device | A phone's SIP account: the credentials and settings a physical phone or softphone app uses to register and place or receive calls. See Device settings in depth. |
| Provider | A carrier this system sends outbound calls to, or receives inbound calls from, over SIP. See Providers in depth. |
| PBX pool | A group of devices/extensions allowed to dial each other directly by extension — the boundary between "internal" calls and everything else. See PBX pools & extensions. |
| IVR | An automated menu ("press 1 for Sales") that plays a message and routes the caller depending on which key they press. See IVR menus. |
| Queue | Holds callers in line and distributes them to a group of agents (devices) as those agents become free — used for support/sales lines with several people answering. See Queues. |
| Ring group | Rings several devices at once, or one after another, for a single incoming call. See Ring groups. |
| Prepaid / Postpaid | A prepaid customer must keep a positive balance to call out. A postpaid customer is billed afterwards and is instead allowed to run their balance down to a credit limit. See Prepaid vs. postpaid and A customer cannot call. |
| Hangup cause | The numeric code recorded with every call explaining how or why it ended — from the network (e.g. 17 User busy) or from this product's own checks (e.g. 211 Low balance for user). See A call fails. |
Note
A few of these terms carry over from an earlier generation of billing software — if a menu or field name feels unusual, it's most likely a long-standing convention rather than something new.