CBX-500 should do what you want. We have a number of Interworking VCs using the same cards as you listed, and it works fine. For the Translation type in the PVC setup, your options are: 1483 <=> 1490 None Hth, -Jeff -----Original Message----- From: james [mailto:hackerwacker@tarpit.cybermesa.com] Sent: Monday, December 13, 2004 10:36 PM To: Nanog@Merit. Edu Subject: CBX-500 question, FRF.8 I am working on a solution that will require my CBX-500 to do transparent mode and not translation mode. I've grepped the docs I have and looked on the web and can't find reference to which mode the CBX uses. This cross connect would be between the FR 3/1 card to the ATM DS3 card. Does anyone know which mode the CBX uses ? -- James H. Edwards Routing and Security Administrator At the Santa Fe Office: Internet at Cyber Mesa jamesh@cybermesa.com noc@cybermesa.com (505) 795-7101