Recently, ITU-TSS recommends a service specific connection oriented protocol (SSCOP) which assures the successful transmission of signalling information for B-ISDN. In the SSCOP, there is a mechanism to exchange periodically status informations for both error and flow controls. In this paper, we analyze the SSCOP with a discrete-time queueing model. We consider two cases for link-by-link and end-to-end controls. As the performance measures, we investigate delay, throughput, and buffer size of the receiver. The average values of these measures are analyzed with respect to the loss probability of messages, the traffic load, and the exchange period of status information. We also verify the accuracy of this model with simulations.