SIP (RFC 3261~3266 and various SIP draft extensions), SDP(RFC2327), RTP/RTCP(RFC 1889, 1890) VAD (Voice Activity Detection), CNG (Comfort Noise Generation), AEC (Acoustic Echo Cancellation), AGC G.711?-law, G711a-law ...

We are the professional manufacturer of VOIP hardware in China (ZHENGZHOU YUNENG COMMUNICATION CO.LTD), and our products include: IP phone, USB phone, gateway<ATA>, conference box & IP camera. As the biggest ...

box >>> 1/2 year warranty The condition of working with Stephen Technologies is very comfortable. Buyers can always get the most competitive products with multiple OEM services. For VoIP devices, Stephen ...

we are the professional manuafacture for voip in china. our products are Voip gateway,Ip phone. and ATA box best quality and reasonable price. my ...

broad-band IP Phone, ATA, Gateway, USB Phone, USB Gateway, USB Conference box and so on sell very well in China and oversea market. The products have been well sold in china and far exported to european ...

ATA; 5400 rpm Slot-loading optical drive: 8x SuperDrive (DVD+R DL/DVDRW/CD-RW) Expansion: One FireWire 400, one FireWire 800, three USB 2.0 ports, and ExpressCard/34 slot Video Built-in iSight camera, DVI, VGA ...

box and so on. YUXIN YWH100 series IP Phone is the earliest VOIP product in China. Now we own export license. Besides YWH100 series products, we have released YWH10, YWH200, YWH300, YWH500,YWH600 series IP phone and ...

ATA Series ( ATA33, ATA66, ATA100, ATA133, ATA150), video cable, audio cable, high temperature-resistant cable, and others for special use. And it has gotten certification of UL, CSA, VDE, CUL, CCC. Digital line:MP3 ...

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