hi; i am trying to perform some routing logic based on the recieved SIP requests. In the past i have used Sip Express Router and in ser.cfg you can for example perfome operation on the a request or parameter before continunig to route it. 1 - Now is there a way of doing this with asterisk? 2 - Could this be related in someway to writing SIP-CGI or CPL scripts? can i invoke a given script based on the reciepts of a given request for example? thanks m. smadi