The Grandstream firmware / web interface includes some features present and not present on the IP camera that I purchased. I disassembled it to play with it some more. The camera controller board had pinouts for SD/USB connectivity. The I/O and cables depicted in the diagram above were connected to the camera. The network cable was a POE cable but the camera board did not have POE. Note that Grandtec USA doesn't show the camera as purchased.
1 - PTZ(via RS485) Mode - Pelco D and Pelco P (wired)
2 - DI/DO Mode (cabled and functional)
2 - Optical Zoom
3 - Focus
4 - storage of recordings to SD card
5 - software which utilizes these features on multiple cameras
6 - CMOS settings (working) - Flip, Shutter speed, IR cut setting,IR cut sensitivity, Color Mode (Color, auto or BW)
7 - DDNS (working)
8 - NTP (external or internal)
9 - Alarm (15 regions and sensitivity) plus schedule
10 - Alarm Options to: Record, Voice alarm to SIP Phone, Alarm to HTTP and Alarm to email and or FTP server.
11 - Syslog to syslog server
12 - OSD of time and or label
13 - SMTP server and email functions
14 - Tiered user functions and Allow Anonymous Viewing.
15 - primary and secondary video streaming - H264 and MJPEG (options: resolution, bit rate, frame rate, bit rate control (CBR and VBR), Image quality and I-Frame interval.
16 - Audio Codecs - PCMU, PCMA and AAC.