Index: channels/chan_vpb.c
===================================================================
RCS file: /usr/cvsroot/asterisk/channels/chan_vpb.c,v
retrieving revision 1.12
diff -u -r1.12 chan_vpb.c
--- channels/chan_vpb.c	9 Dec 2003 23:55:17 -0000	1.12
+++ channels/chan_vpb.c	30 Jan 2004 17:27:28 -0000
@@ -681,13 +681,26 @@
 {
     struct vpb_pvt *p = (struct vpb_pvt *)ast->pvt->pvt;
     int res = 0;
-    char *s = strrchr(dest, '/');
+    char *s = strrchr(dest, '/'), char *t;
 
     if (s)
 	 s = s + 1;
     else
 	 s = dest;
 
+	/* We cannot use either the & or the , in a Dial string, as these
+	 * characters are used to signal 1) different concurrent technologies,
+	 * or 2) separation of application arguments.  Therefore, this channel
+	 * driver should translate the w (for a pause) to the , and the f (for
+	 * a flash-hook) to a &. */
+
+	for (t = s; t != '\0' ; t++) {
+		if ((*t == 'w') || (*t == 'W'))
+			*t = ',';
+		else if ((*t == 'f') || (*t == 'F'))
+			*t = '&';
+	}
+
     if (ast->_state != AST_STATE_DOWN && ast->_state != AST_STATE_RESERVED) {
 	ast_log(LOG_WARNING, "vpb_call on %s neither down nor reserved!\n", 
 		ast->name);