| Max | 8f934f5 | 2016-03-09 15:07:08 +0100 | [diff] [blame^] | 1 | msc { |
| 2 | hscale="1.2"; |
| 3 | sgsn [label="SGSN"], pcu [label="PCU"], bts [label="BTS"], bsc [label="BSC"]; |
| 4 | |
| 5 | |||; |
| 6 | bts box bsc [label="A-bis connection"]; |
| 7 | pcu <: bts [label="Config. parameters"]; |
| 8 | pcu rbox pcu [label="listen on UDP socket"]; |
| 9 | pcu note sgsn [label="send to SGSN UDP (port 23000)"]; |
| 10 | pcu => sgsn [label="NS RESET"]; |
| 11 | pcu <= sgsn [label="NS RESET ACK"]; |
| 12 | ...; |
| 13 | pcu => sgsn [label="NS UNBLOCK"]; |
| 14 | pcu <= sgsn [label="NS UNBLOCK ACK"]; |
| 15 | pcu box sgsn [label="NS link established"]; |
| 16 | ...; |
| 17 | pcu => sgsn [label="BVC RESET"]; |
| 18 | pcu <= sgsn [label="BVC RESET ACK"]; |
| 19 | ...; |
| 20 | pcu => sgsn [label="BVC UNBLOCK"]; |
| 21 | pcu <= sgsn [label="BVC UNBLOCK ACK"]; |
| 22 | pcu box sgsn [label="BSSGP link established"]; |
| 23 | |||; |
| 24 | } |