 select 1 /* "No" */ and press OK. H. Press ONCE ONLY the Transition button. I. Press the Send To button: select L_EstabResp and press OK, select the target process << Block DLCb >> dispatch and press OK. J. Press several times the Transition button until you see the Select - Enter path window. K. In the Select - Enter path window, select 1 /* "No" */ and press OK. L. Press two times the Transition button: signal L_EstabConf is transmitted. The new connection has been established between sides A and B. M. To check the state of the two instances of process DLC on each side, select View > Command Window; in the List-Process part, you see that all four instances of process DLC exist and are in state connected: DLC 2 connected <<Block DLCa: > connected <<Block DLCa>> DLC 2 connected <<Block DLCb>> DLC: 1 connected <<Block DLCb>> 60 Validation of Communications Systems with SDL N. To test that the new connection16 works, let us transfer data through it: send signal L_DataReq with parameters 1 and 39 to << Block DLCa >> dispatch, press Go, select 1 /* "No" */ and press Go. The generated MSC, represented at blocks level by Figure 4.23, shows that block DLCb transmitted signal L_DataInd(1, 39) to envb (representing Service User B): the data 39 has been successfully transferred from A to B through DLC 1. MSC cnx2 block block block dataLink DLCaSU DLCa_2 DLCb_3 DLCbSU dataLink_1 L_EstabReq V76frame V76frame (SABME: (.0.)) L Establnd DLC number 0 (SABME : (. 0 .)) established. L_EstabResp V76frame V76frame L_EstabConf (UA:(.0.)) (UA : (.0.)) L_EstabReq V76frame (SABME (.1.)) V76frame L_Establnd DLC number 1 (SABME : (. 1 .)) established. L_EstabResp V76frame V76frame L EstabConf (UA:(.1.)) (UA (.1.)) Transfer of data 39 through DLC number 1: L_DataReq V76frame (1,39) V76frame (1:(.1,39,15.)) L_Datalnd (I ( . . 1, 39, 15 )) (1,39) Figure 4.23 Two DLCs 0 and 1 connected in parallel O. Save the simulation commands into a file: in the Simulator, select Log > Save Input History, select All files, enter cnx2.com and press OK. P. 