1.Rolled steel material shell, high mechanical strength and strong impact resistance.
2.Heavy Duty handset with hearing Aid compatible receiver, Noise canceling microphone available.
3.Metal Keypad, 4 buttons can be programmed as speed dial number.
4.With display, can display the outgoing number, call duration, etc.
5.The sensitivity of the speaker and microphone can be adjusted; optional voice coding methods such as G.729,
G.723, G.711, G.722, G.726;Support 2 lines SIP, SIP 2.0 (RFC3261).
6.IP Protocols:IPv4, TCP, UDP, TFTP, RTP, RTCP, DHCP, SIP.
7.Weather proof protection to IP65
8.Wall mounted, Simple installation.
9.Multiple housings and colors.
10.Self-made telephone spare part available.
11.CE, FCC, RoHS, ISO9001 compliant.