We are receiving a large amount of dropped calls on our asterisk system. After debugging I find the following line at the same time the call is dropped. (DEBUG[8882] channel.c: Got a FRAME_CONTROL (5) frame on channel) I was unable to find very much information on this message. Just a quick background of our system: Tyan 2882 motherboard Dual Core Operon Processors 2 SATA Drives with Linux Software Raid TE411P Digium Card TDM400P Digium Card Intel PCI Gigabit NIC Fedora Core 4 OS Asterisk 1.2.9.1 Zaptel 1.2.6 Libpri 1.2.3 All phones on local LAN No missed interrupts at all Zttest: Best: 100.000000 -- Worst: 99.987793 -- Average: 99.993896 Any help would be appreciated. Thank You James Hawks