The Model 5801 is a Voice over IP Telephone Adapter, which allows standard analog telephones to make and receive calls over a cable or ADSL Internet connection. A conventional phone or cordless phone is plugged into the adapter and then the adapter is plugged into a broadband connected router or Internet gateway. A minimum of five attached phones can be rung simultaneously using the built-in ring generator. The model supports industry-standard Session Initiation Protocol (SIPv2) and works with a wide range of service providers and SIP-based VoIP equipment. The Model 5801 also supports G.711 and iLBC Codecs.

Product Description	Zoom Model 5801 Voice over IP Telephone Adapter - VoIP phone adapter
Device Type	VoIP phone adapter
Enclosure Type	External
Dimensions (WxDxH)	5.7 in x 4.4 in x 1.1 in
Ports Qty	2
Network / Transport Protocol	TCP/IP, UDP/IP, VoIP, ICMP/IP
Remote Management Protocol	HTTP
VoIP Protocols	SIP v2
Telephony Interfaces	1 phone (FXS), 1 line (FXO)
Features	DHCP support

General
Device Type	VoIP phone adapter
Width	5.7 in
Depth	4.4 in
Height	1.1 in

Networking
Form Factor	External
Ports Qty	2
Connectivity Technology	Wired
Network / Transport Protocol	TCP/IP, UDP/IP, VoIP, ICMP/IP
Remote Management Protocol	HTTP
Features	DHCP support
Encryption Algorithm	MD5, ARCFOUR
Compliant Standards	IEEE 802.1Q

IP Telephony
VoIP Protocols	SIP v2
Voice Codecs	G.711, G.729
Telephony Interfaces	1 phone (FXS), 1 line (FXO)
IP Telephony Features	Echo cancellation (G.168)

Expansion Connectivity
Interfaces	1 x phone line - FXS - RJ-11 Network 1 x phone line - FXO - RJ-11