Hi, What is the difference bet. CLID (calling Line ID), DNIS, ANIS, Caller ID. ? Does TCH support all of them ? Basically, I am looking for the carrier be able to pass TCH the following info (we have T1/PRI) (a) which number the user called (b) what is the phone number that the user calling in from ? (thier phone number ) Thanks Meng Meng Tsai, tsaim@mft.com , MFT http://www.mft.com Tel: 718-888-0098 Fax: 718-762-0939 - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.