Информация о производителе
Компания:
Zheren Tech. Co., Ltd |
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Адрес:
3b Guohua Plaza, Qiaoxiang Ave. 3rd Road, Futian District, Shenzhen, China, Shenzhen, Guangdong, China (Mainland) |
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Телефон:
+86-755-61302198 |
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They are fully compatible with sip industry standard and can interoperate with many other sip compliant devices and software on the market.Key featuresSupport two models: bridge and router nat naptNetwork protocols: TCP / UDP / IP, ICMP, HTTP, DHCP client: WAN interface, DHCP server LAN interface, DNS client, DNS relay, sntp, pppoe, FTP, tftpVOIP protocols: sip (rfc3261Voice codecs: g. 711a / u g. 723-r63 g. 723-r53 g. 729Redundancy sip server: can auto swap address between two servers addressNat transversal: support stun client. Can modify sip register port, HTTP server port, telnet server port and rtp portSupport two sip server synchronously: can register two different sip server, and can make a call by either proxySupport standard voice features such as numeric caller ID display, call waiting, hold, transfer, do-not-disturb, call forward, in-band and out-of-band dtmf hotline (off hook autodial) , ban outgoingSupport standard encryption and authentication (digest using md5, md5-sess)Support silence suppression, VAD (voice activity detection) , CNG (comfort noise generation) , line echo cancellation (g. 168) , and AGC (automatic gain control)Provide easy configuration thru manual operation (web interface or telnet) or automated centralized configuration files via tftp or HTTP.Support firmware upgrade via tftp FTP and HTTPZheren calling plan:Pre-pay plan: total free for the IP to IP between VOIP devices. Call other location a-z traffic at very good price.Virtual phone number: provide more than 30 countries phone numbers. User can choose its own geographical phone number receive calls totally free! It supports transfer, three parties calling, voice mail service etc.Balance check: user can check the consumption cost and called number etc. through our platform. Rechargeable the sip phone is easy
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