Allow to Dial without sending complete i.e. This is necessary if dialing is done in overlapped mode but signeling network does not supports sending of initla message witout CPN: SS7 IAM without CPN results in protocol error if send to switch (vendor?) but works B2B with Diva.

README

@@ -98,6 +98,7 @@ The Dial string
          (Useful if additional digits should be send afterwards or together
           with 'b' to get the dialtone and then send the number, e.g., if 
           no progress tones are available)
+   'c' : do not send sending complete
    's' : activate 'stay-online': do not disconnect CAPI connection on hangup.
          This is needed to give additional commands like CCBS after hangup.
          To really hang up the CAPI connection, use either capicommand(hangup)

chan_capi.c

@@ -1525,6 +1525,7 @@ static int pbx_capi_call(struct ast_channel *c, char *idest, int timeout)
 	int doqsig;
 	char *sending_complete;
 	unsigned char *facilityarray = NULL, *bc_s = NULL, *llc_s = 0, *hlc_s = 0;
+	int no_sending_complete = 0;
 	
 	MESSAGE_EXCHANGE_ERROR  error;
 
@@ -1555,6 +1556,11 @@ static int pbx_capi_call(struct ast_channel *c, char *idest, int timeout)
 				cc_log(LOG_WARNING, "Overlap already set in '%s'\n", idest);
 			i->doOverlap = 1;
 			break;
+		case 'c': /* Do not send sending complete */
+			if (no_sending_complete != 0)
+				cc_log(LOG_WARNING, "No sending complete already set in '%s'\n", idest);
+			no_sending_complete = 1;
+			break;
 		case 'd':	/* use default cid */
 			if (use_defaultcid)
 				cc_log(LOG_WARNING, "Default CID already set in '%s'\n", idest);
@@ -1697,7 +1703,7 @@ static int pbx_capi_call(struct ast_channel *c, char *idest, int timeout)
 		}
 	} else {
 		called[0] = strlen(dest) + 1;
-		sending_complete = "\x02\x01\x00";
+		sending_complete = (no_sending_complete == 0) ? "\x02\x01\x00" : "\x00";
 	}
 
 	if ((p = pbx_builtin_getvar_helper(c, "CALLEDTON"))) {