(گیت وی)Newrock hx404e-4fxs

IMS/SIP/MGCP protocols
Unequalled configurability of FXS and FXO ports
TLS/SRTP
500 routing and number-manipulation rules
Configurable SIP ports and IP-address whitelist
Smart FoIP® with Maximum fax rate of 33,600 bps by T.38 or G.711 pass-through
Polarity-reversal/busy-tone detection
High availability & PSTN failover
Auto provisioning
Remote access via New Rock Cloud
Management with New Rock or third-party Element Management Systems (TR-069, SNMP)
Interoperability with popular SIP servers, such as Cisco CallManager/CUCM, Broadsoft, Microsoft Skype for Business (Lync), Huawei IMS, and Asterisk/Elastix
Class I lightning protection