Index: channels/chan_sip.c
===================================================================
RCS file: /usr/cvsroot/asterisk/channels/chan_sip.c,v
retrieving revision 1.271
diff -u -r1.271 chan_sip.c
--- channels/chan_sip.c	12 Jan 2004 06:01:46 -0000	1.271
+++ channels/chan_sip.c	12 Jan 2004 18:36:26 -0000
@@ -2551,7 +2551,7 @@
 				if (x < AST_FORMAT_MAX_AUDIO) {
 					strncat(m, costr, sizeof(m) - strlen(m));
 					snprintf(costr, sizeof(costr), "a=rtpmap:%d %s/8000\r\n", codec, ast_rtp_lookup_mime_subtype(1, x));
-					strncat(a, costr, sizeof(m) - strlen(a));
+					strncat(a, costr, sizeof(a) - strlen(a));
 				} else {
 					strncat(m2, costr, sizeof(m2) - strlen(m2));
 					snprintf(costr, sizeof(costr), "a=rtpmap:%d %s/90000\r\n", codec, ast_rtp_lookup_mime_subtype(1, x));