Closer
The agent who takes qualified warm transfers and closes the sale.
A closer is the agent who takes qualified warm transfers from a fronter and closes the sale. They never dial. Every call they handle has already reached a live, interested, qualified person.
How VICIdial implements it
There is no closer user level. A closer is an agent who logs in and takes calls from a closer in-group rather than joining an outbound campaign - either as their only assignment, or blended alongside one. The closer_campaigns column on vicidial_live_agents is where that in-group selection is held while they are logged in.
Their calls land in vicidial_closer_log, not vicidial_log. That table records the transferred leg specifically, including queue_seconds (how long the transfer waited before a closer picked up), queue_position, and a term_reason that distinguishes a caller hang-up from QUEUETIMEOUT, NOAGENT and the rest. If you are reporting on a fronter/closer operation and the closer's numbers look empty, this is almost always why - you are reading the outbound log.
Reading the queue
queue_seconds is the number that tells you whether the split is balanced. Transfers waiting more than a few seconds mean you are short of closers, and a fronter holding a warm prospect on the line while nobody answers is the fastest way to lose a qualified lead. Consistently zero, with closers idle between transfers, means the opposite.
The other number worth watching is the closer's disposition mix. A high rate of transfers dispositioned as unqualified is a fronter problem showing up in the closer's report, not a closer problem.
Staffing and skills
Closers are usually the smaller and more expensive half of the team, on commission, with more product training and closer quality monitoring than fronters - which is affordable precisely because their time is not spent on ring time and voicemail. Recording every closer call is normal practice, since this is where the commitments that matter are actually made.