NEC Electra Elite IPK II Features And Specifications Manual page 493

Electra Elite IPK II
In voice communication, particularly Internet telephony, the Mean Opinion Score (MOS) provides a
numerical measure of the quality of human speech at the circuit destination. The scheme uses
subjective tests (opinionated scores) that are mathematically averaged to obtain a quantitative indicator
of the system performance. The maximum MOS is 5.0.
This interface supports via KSU configuration:
MEGACO (H.248) signaling Protocol
J
DTMF generation
J
RTP port number designation
J
TOS field QoS support
J
Tone generation
J
General Tone detection
J
G.711 and G.729a voice compression
J
10/100 Base-T LAN interface
J
Echo Canceller
J
Conditions
r Group listening is not supported by (MEGACO) IP stations.
Station Relocation is not supported by (MEGACO) IP stations or IPK Soft Phones.
r
r Not all data networks are suitable to support Voice over Internet Protocol (VoIP). A good
VoIP network solution requires low-latency, low jitter, and low packet loss. Accordingly, the
network must be evaluated for these factors to determine whether or not it can provide toll-
quality speech paths.
When 6- or 7-digit station numbers are used, this feature is not available.
r
r Night Mode is indicated as N on an IPK Soft Phone.
Default Setting
None
IP Station (MEGACO) - MG 16
Document Revision 1
2 - 471