
CS-74 Administration and Set Up Guide Page 3 Essential Trading Systems Corp.
Release notes:
5/7/18 Ver 2. .2 Bug fixes – Device ID reporting (SIP), Constant RTP output during active call (VAD),
RTCP timeout.
4/2 /18 Ver 2. .15 Implemented new “simulcast” feature. Improvements to handsfree audio,
normalized levels between hands free, gooseneck & headset operations. Bug fixes
– Firmware upgrade, SIP messaging device ID.
3/9/18 Ver 2. . New release for new & improved CS-74/64. This version is not backward
compatible. Applies only to SN-218 xxxx and above. Major hardware changes.
New features added: Privacy, full duplex Hands Free.
12/15/17 Ver 1.1.9 Added: SIP Registration Fail timer field, PTT DTMF * # feature. Fixed Auto Answer
check box bug on CS-74
9/1 /17 Ver 1.1.8 Added: enable/disable ring tones on CS-74. Made improvements to No PBX mode,
added new factory reset function (press all 4 buttons)
5/1/17 Ver 1.1.7 Added features: Call w/o PBX, HTTPS, QoS(DSCP). Fixed bugs with: single
channel reload, device type switching. Implemented several changes to web page
layout and descriptions.
1 /3/16 Ver 1.1.6.1 Added feature: SIP VAD.
8/3 /16 Ver 1.1.6 Added features: PTT Mutes Speaker, RTCP. Fixed bugs for : syslog, 2 ms packet
size, SIP 48 responses, NTP. Minor webpage verbiage changes
6/15/15 Ver 1.1.4 Added features: call without registration, RTP keep alive, single channel reload,
SNMP, device type switching. Improved call status reporting.
12/15/15 Ver 1.1.3g Fix files size limits in OS kernel. Must be loaded on any device with pre-1.1.4
firmware to allow further firmware upgrades.
12/8/15 Ver 1.1.3.2 Fix device feeze up after unknown period of time.
3/18/15 Ver 1.1.3 Improvements to code structure, add microphone limiter circuitry.
11/24/14 Ver 1.1.2 Patch “shellshock bash” vulnerability, improvements to audio quality, improvements
to volume adjust controls, add Listen Only feature to channels, remove half duplex
mode, fix various other bugs.
9/22/14 Ver 1.1.1 Fixed numerous bugs discovered in 1.1.
6/11/14 Ver 1.1. First official release.