| 摘要 |
<p>PROBLEM TO BE SOLVED: To avoid mismatches in an SSCOP (Service Specific Connection Oriented Project) state in a device itself and relative to an opposite device, in a communication control unit performing a communications between devices using an AAL (ATM Adaptation Layer) function. SOLUTION: A control means 125 in an AAL function section 120 sets a receiving PDU (Protocol Data Unit) reception mode of a reception judging means 123 at a cancellation mode for not receiving the PDU at the start of the device. When an AAL user 110 transmits an AAL-set-request to a protocol processing means 122, an SSCOP function section 122b receives the AAL-set- request as an AA-set-request via an SSCF (Service Specific Connection Function) section 122a, and transmits a BGN-PDU to an opposite device 140, and means 125 changes the receiving PDU reception mode of the means 123 into a permission mode for giving reception.</p> |
