Acknowledges that a previously issued primitive was received.
This primitive consists of one M_PCPROTO message block with the following structure:
typedef struct {
   ulong dl_primitive;
   ulong dl_correct_primitive;
} dl_ok_ack_t;
The DL_OK_ACK primitive acknowledges to the DLS user that a previously issued primitive was received. It is only initiated for the primitives listed in the "States" section.
| dl_primitive | Specifies the DL_OK_ACK primitive. | 
| dl_correct_primitive | Identifies the received primitive that is being acknowledged. | 
| Valid | The message is valid in response to the following primitives: | 
| New | The resulting state depends on the current state. | 
This primitive is part of X.25 Licensed Program.