Samsung Hanwha SPA-D1000 IP Audio Module

authentication, User access log Supported Protocols IPv4, HTTP, SIP, mDNS, DNS, NTP, TCP, UDP, DHCP, ARP, ICMP API (Application Programming Interface) SUNAPI Multi-source Dynamic PA control Multi-source up to 48 (Multicast) (Audio 24CH + Mic 24CH) Up to 256 Zone Control (Multicast) Up to 20 Zone Control (Unicast) Up to 255 Groups VoIP Tested with SIP clients such as Grandstream, Yealink, Cisco, MicroSIP softphone and PBX supplier such as Asterisk Tested with SIP client such as Grandstream and PBX supplier such as Grandstream Supported SIP features: DTMF (RFC2833) Supported codecs: PCMU, PCMA, speex/8000, speex/16000 TTS English (US, UK), German, French, Spanish, Russian Event & Preset Virtual Contact, Dry contact Functional Monitoring Connection verification, Built-in system logging