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mda series analog gateway carrier-class reliability ● supports fault detection and network management alarms. ● low power consumption and high integration. ● support three levels of lightning protection standards. ● supports over-voltage over-voltage protection for pots interfaces. ● smaller, higher-quality communications power supply with ripple protection, surge protection, power line bonding and other protections, stable output, high reliability, and instantaneous power-off protection are supported. ● the use of shielded electromagnetic radiation characteristics of the chassis, the electromagnetic compatibility, rohs and other aspects of a professional design, can effectively shield all kinds of environmental electromagnetic interference. ● transmission loss, loss frequency, nonlinear distortion, cross-talk attenuation, cross-over noise, and non-overlapped noises meet carrier-grade standards. flexible and powerful functional strategies ● support administrator login and password protection, with its own firewall function, can effectively prevent various network virus attacks and improve data security. rich protocol support capabilities ● supports sip, mgcp, and h248 protocols. ● snmp network management protocol is supported to implement centralized network management, remote monitoring, and maintenance of devices. ● supports t.30, t.38, and voice transparent transmission protocols to implement fax services on ip bearer networks. ● supports rtp/rtcp protocol for real-time voice packet encapsulation and voice playback. perfect business support capabilities ● support voice, fax, modem business. ● supports various voice basic services and supplementary services. ● switch between ip phones and traditional pstn phones. flexible access method ● support ip line access. ● support xdsl dial-up access. ● supports cable modem access. diversified management methods ● support snmp-based remote centralized device network management. ● support web-based device network management. ● strong qos guarantee. ● supports ipv4-based tos and diffserv services to ensure voice priority. ● supports ieee802.1p, ieee802.1q. multi-parameter adjustable ● can be adjusted to include feed voltage, loop current, ringing voltage, long lines, short lines, impedance parameters, and more. advanced speech processing technology ● supports itu-t g.711a/u, g.729, g.723.1 and other voice encodings. ● support voice activity detection (vad), effectively save network bandwidth resources. ● supports comfort noise generation (cng). ● support echo cancellation, index can reach 128ms. ● supports adaptive dynamic buffering technology. ● supports packet loss compensation technology. ● supports dtmf generation/detection. ● support caller number detection and display. ● supports dtmf in-band, sipinfo, and rfc2833 transmission technologies. ● supports flexible input/output gain control. ● support 1:1 power escape function. ● supports one machine double number function. |