IP Address Lists and Station Number Portability

Network Requirements

Note:

Priority 0 is a higher priority than Priority 1.

Network Audio Quality Display on 1600 Series IP Telephones

All 1600 Series IP Telephones give the user an opportunity to monitor network audio performance while on a call. For more information, see the telephone user guide.

While on a call, the telephones display network audio quality parameters in real-time, as shown

in Table 4:

Table 4: Parameters in Real-Time

Parameter	Possible Values

Received Audio Coding	G.711, G.711u, G.711a, G.726, G.729A, or G.729B.

Packet Loss	"No data" or a percentage. Late and out-of-sequence packets
	are counted as lost if they are discarded. Packets are not
	counted as lost until a subsequent packet is received and the
	loss confirmed by the RTP sequence number.
Packetization Delay	"No data" or an integer number of milliseconds. The number
	reflects the amount of delay in received audio packets, and
	includes any potential delay associated with the codec.

One-way Network Delay	"No data" or an integer number of milliseconds. The number is
	one-half the value RTCP computes for the round-trip delay.
Network Jitter	"No data" or an integer number of milliseconds reporting the
Compensation Delay	average delay introduced by the jitter buffer of the telephone.

The implication for LAN administration depends on the values the user reports and the specific nature of your LAN, like topology, loading, and QoS administration. This information gives the user an idea of how network conditions affect the audio quality of the current call. Avaya assumes you have more detailed tools available for LAN troubleshooting.