Ciena calls this a service delivery switch. As such, there are lots of policing and shaping controls. Nothing available without a customer login shows packet memory.
October 2012 . Revision A, Standard: . Document assigned a new document number. This document replaces the document 009-2010-115. . Overview material has been moved to 39XX/51XX Product Fundamentals . Optics information remains in Packet Networking Transceivers Reference (009-2011-602) . Orderable part number information removed. For ordering assistance please contact your Ciena representative. December 2012 . Revision B, Standard: . Updated to add 3930 Sync + External Timing system . Updated LED information to cover Reset behavior February 2013 . Revision C, Standard: . Updated to add warnings and cautions September 2013 . Revision D, Standard : . Updated to indicate External Timing interface support for SAOS Release 6.11 . Rebrand portfolio as Packet Networking (was Carrier Ethernet Solutions). . Update name for the transceiver reference to Packet Networking Transceivers Reference (009-2011-602) and the glossary to Packet Networking Glossary (009-3299-026) January 2014 . Revision E, Standard : . Rebuilt the book to move the back cover to the end.