If a SIP phone has neither KPML nor a set of dial rules configured, how are digits sent to Cisco Unified Communications Manager for further processing?

Pressing '#' to terminate dialing is a behavior tied to specific dial plan configurations or MGCP/SCCP interdigit timeout handling, not the default fallback behavior for SIP phones lacking both KPML and dial rules.

KPML enables real-time digit-by-digit reporting to CUCM as keys are pressed, and dial rules let the phone autonomously detect a complete dial string via pattern matching; without either mechanism, all digits remain buffered locally on the phone and the user must press the Dial softkey to explicitly signal completion and initiate SIP INVITE processing.

There is no standard 'enbloc' softkey on Cisco SIP IP phones in CUCM; enbloc describes the mode of sending all collected digits at once, which is exactly what the Dial softkey performs.

Automatic digit transmission requires either KPML for real-time reporting or dial rules for pattern-based completion detection; with neither configured, the phone has no trigger to send digits automatically.