Cisco ATA 191 Multi-platform Analogue Telephone Adapter, 2-Port Handset-to-Ethernet Adapter, 1-Year Limited Hardware Warranty (ATA191-3PW-K9). Voice codecs: G.711Mu, G.711a, G.726, G.729A, G.729ab, Fax compatibility: T.38, Safety: UL 60950 Second Edition, CAN/CSA-C22.2 No. 60950 Second Edition, IEC 60950-1:2005 (Second Edition).... VoIP protocols: SIP, Supported network protocols: TCP, UDP, RTP, HTTP, ARP, RTCP, ICMP, LLDP, Management protocols: SNMPv3. Security algorithms: AES, HTTPS, SSH. Country of origin: China, Quantity per pack: 1 pc(s). Dimensions (WxDxH): 100 x 100 x 28 mm, Weight: 132.1 g, Package weight: 498.87 g