[Bugfix][T108][bug-view-1234] in demo, test gsw_voice_set_rtp_port fail

    Only Configure: No
    Affected branch: unknown
    Affected module: rtp
    Is it affected on both ZXIC and ASR: only ASR
    Self-test: yes
    Doc Update: no

Change-Id: I66c71d2fb3bc40a774be580aa80e58807c703d3c
diff --git a/mbtk/test/libgsw_lib/gsw_voice_test.c b/mbtk/test/libgsw_lib/gsw_voice_test.c
index 28098c2..93d64e6 100755
--- a/mbtk/test/libgsw_lib/gsw_voice_test.c
+++ b/mbtk/test/libgsw_lib/gsw_voice_test.c
@@ -429,16 +429,23 @@
 
                 int mode;    
                 int port;               
-                printf("Enter set mode (0: server, 1:client)\n");
+                printf("Enter set mode (0: client, 1: server)\n");
                 printf("%d\n",scanf("%d", &mode));
                 fflush(stdin);
                 printf("mode is %d\n", mode);
-                
-                printf("Enter set port\n");
+
+                if(mode==0)
+                {
+                    printf("Enter set port, for client, port should > 1024 and < 65535\n");
+                }
+                else
+                {
+                    printf("Enter set port, for server, port should >= 0 and <= 7\n");
+                }
                 printf("%d\n",scanf("%d", &port));
                 fflush(stdin);
                 printf("port is %d\n", port);
-                
+               
                 ret = gsw_voice_set_rtp_port(mode,port);
 				if(ret != 0)
 				{