A Special Outpulsing Device (SOD) is a specially configured analog device which is expected to receive DNIS digit information via inband digit signalling upon through-connection of an ACD call. The exact DNIS digit information outpulsed to an SOD is configurable on a system basis.

SODs can be configured as Agents. Because they are typically not normal Agent positions, they can activate indefinite work mode via a simple offhook-onhook sequence when configured as autologon Agents.