Maybe you are getting a -2 return code from your mf_process_maxfwd_header function<br /><br />http://www.opensips.org/html/docs/modules/1.4.x/maxfwd.html#id227234<br /><br />Before the sl_send_reply(&quot;483&quot;,&quot;Too Many Hops&quot;); in your code do an xlog and print out $retcode to see what its value is.<br /><br /><br /><br /><br /><br />On , Schneur Rosenberg &lt;rosenberg11219@gmail.com&gt; wrote:<br />&gt; I&#39;m trying to manipulate MWI with sipsak, problem is that I get a<br />&gt; <br />&gt; SIP/2.0 483 Too Many Hops, I&#39;m probably sending the packet wrong, here<br />&gt; <br />&gt; is the packet and response.<br />&gt; <br />&gt; <br />&gt; <br />&gt; U 64.69.27.120:57036 -&gt; 75.98.168.213:5060<br />&gt; <br />&gt; NOTIFY sip:grattcisco2@sip.mytcm.com SIP/2.0.<br />&gt; <br />&gt; Via: SIP/2.0/UDP 64.69.27.120:57036;branch=z9hG4bK.6d757891;rport;alias.<br />&gt; <br />&gt; From: sip:test@sip.mytcm.com&gt;.<br />&gt; <br />&gt; To: sip:grattcisco2@sip.mytcm.com&gt;.<br />&gt; <br />&gt; Contact: sip:test@sip.mytcm.com&gt;.<br />&gt; <br />&gt; Call-ID: c1661285-e48c9cf6-356@sip.mytcm.com.<br />&gt; <br />&gt; CSeq: 1898 NOTIFY.<br />&gt; <br />&gt; Event: message-summary.<br />&gt; <br />&gt; Content-Type: application/simple-message-summary.<br />&gt; <br />&gt; Max-Forwards: 70.<br />&gt; <br />&gt; Content-Length: 0.<br />&gt; <br />&gt; Messages-Waiting: 10.<br />&gt; <br />&gt; Voicemail: 10/20.<br />&gt; <br />&gt; .<br />&gt; <br />&gt; <br />&gt; <br />&gt; <br />&gt; <br />&gt; U 75.98.168.213:5060-&gt; 64.69.27.120:57036<br />&gt; <br />&gt; SIP/2.0 483 Too Many Hops.<br />&gt; <br />&gt; Via: SIP/2.0/UDP<br />&gt; <br />&gt; 64.69.47.111:57036;received=64.69.47.111;branch=z9hG4bK.6d757891;rport=57036;alias.<br />&gt; <br />&gt; From: sip:test@sip.mytcm.com&gt;.<br />&gt; <br />&gt; To: sip:grattcisco2@sip.mytcm.com&gt;;tag=c97b4d1cb1f3d0da549e06a8d482ef63.84af.<br />&gt; <br />&gt; Call-ID: c1661285-e48c9cf6-356@opensips1.sosglobal.info.<br />&gt; <br />&gt; CSeq: 1898 NOTIFY.<br />&gt; <br />&gt; Server: OpenSIPS (1.7.1-notls (x86_64/linux)).<br />&gt; <br />&gt; Content-Length: 0.<br />&gt; <br />&gt; .<br />&gt; <br />&gt; <br />&gt; <br />&gt; _______________________________________________<br />&gt; <br />&gt; Users mailing list<br />&gt; <br />&gt; Users@lists.opensips.org<br />&gt; <br />&gt; http://lists.opensips.org/cgi-bin/mailman/listinfo/users<br />&gt; <br />&gt;