Product Comparison: NexLog Communications Logging Recorders 
NexLog 740 NexLog 840
Analog Recording Channels 8 to 96 8 to 240
Digital Recording Channels 8 to 96 8 to 240
T1/E1 PRI 8 Circuits 10 Circuits (240 channels)
STD Hard Disks 2 X 1 TB RAID1 2 X 1 TB RAID1
Optional Hard Disks 2 TB 2 TB
Maximum Hard Disk Capacity 4 X 2 TB (RAID5) yields 6 TB 4 X 2 TB (RAID5) yields 6 TB
Hot Swap Hard Disk Yes (option) Yes (option)
STD Archive Drives 1 X 9.4GB DVD-RAM 1 X 9.4GB DVD-RAM
Optional Archive Drives 500 GB Removable HD 500 GB Removable HD
Operating System Embedded Linux Embedded Linux
Database Internal SQL Relational database with programmable retention Internal SQL Relational database with programmable retention
Network 2 x 1 GB Ethernet (NIC bonding supported) 2 x 1 GB Ethernet (NIC bonding supported)
Local Front Panel Control Full control with optional 7" Color Touch Screen Full control with optional 7" Color Touch Screen
Remote Control Software MediaWorks For Windows, NexLog web-based Configuration Manager MediaWorks For Windows, NexLog web-based Configuration Manager
Security Key-secured Power switch access,  Multi-Level User ID & Passwords down to the Channel and role level, Password complexity and expiration support Keyed Power & Multi-Level User ID & Passwords down to the Channel and role level, Password complexity and expiration support
ANI/ALI CAD Integrations Yes Yes
Power 120/240 VAC, 50/60Hz., 350W 120/240 VAC, 50/60Hz., 400W
Power Supplies Dual, Hot-Swap Dual, Hot-Swap
Height 5-1/2” – 3U form factor, rack-mountable 7” – 4U form factor, rack-mountable
Depth 24" 26"
Weight 50-70 Pounds 65-95 Pounds