# Dialer

The dialer is a subsystem that allows D3 systems to communicate
over serial lines to transfer items, execute commands on remote sites,
and to synchronize databases by transferring updates.

## See also

- [dialer command](https://d3codex.com/tcl/dialer-command/)
- [dialer-copy command](https://d3codex.com/tcl/dialer-copy-command/)

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Source: https://d3codex.com/definitions/dialer/ - part of the D3Codex reference.