108
Appendix
en / en / A31008-M2218-L101-3-7619 / appendix.fm / 20.03.2012
V
e
rsion 2, 27.0
5
.2010
Specifications
LAN
2 port LAN switch: 10 Mbit, 100 Mbit
Headset connections
corded
Power supply
100–240 V, ~50/60 Hz
Power over Ethernet
PoE, IEEE 802.3af, class 3
Power consumption (standby)
4.6 W
Environmental conditions in opera-
tion
±0°C to +45°C,
10% to 95% relative humidity
Language codecs
G.711 μ-law/a-law, G.722, G.726, G.729AB, iLbc
Quality of Service (QoS)
RSVP/DiffServ (RFC2474, RFC2475)
VoIP protocols
SIP (RFC3261, RFC2543), RTP
VoIP security
SRTP (RFC3711), TLS (RFC2246), SIPS
Internet protocols
IPv4 (RFC0791), IPv6(RFC2460)
Further protocols
STUN, ICE, TCP, DHCP