| Word | Description |
| B-channels | In an ISDN, T1 circuit, b-channels carry main data, such as the voice traffic. There are 23 B-channels for voice and 1 D-channel (for signaling information) in a North American PRI, ISDN circuit. |
| Blended | Referring to the process in which the SpitFire Predictive software can combine inbound with outbound calling and transfer all of the calls to available Agents. |