DICOM PS3.7 2021b - Message Exchange

9.3.5.3 C-ECHO Protocol Procedures (Current)
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#### 9.3.5.3 C-ECHO Protocol Procedures

The C-ECHO procedures are initiated by the invoking DIMSE Service User issuing a C-ECHO request primitive. On receipt of the C-ECHO request primitive the DIMSE-C protocol machine shall:

- construct a Message conveying the C-ECHO-RQ

- send the Message using the P-DATA request service (see 8.1)

On receipt of a Message conveying a C-ECHO-RQ the DIMSE-C protocol machine shall issue a C-ECHO indication primitive to the performing DIMSE Service User.

On receipt of a C-ECHO response primitive, issued by the performing DIMSE Service User, the DIMSE-C protocol machine shall:

- construct a Message conveying the C-ECHO-RSP

- send the Message using the P-DATA request service (see 8.1)

On receipt of a Message conveying a C-ECHO-RSP the DIMSE protocol machine shall issue a C-ECHO confirmation primitive to the invoking DIMSE Service User, thus completing the C-ECHO procedure.

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DICOM PS3.7 2021b - Message Exchange