Table 2-57 Minimum Bandwidth Required - NEC Univerge SV8100 Features And Specifications Manual

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This features requires Version 3000 (3.01 or higher) CPU software and Version 3000

Enhancement license (0031).

The K-CCIS – IP with PVA shares the CO/PBX/Tie/DID trunks available for the system.

The CD-PVAA blade supports only those codecs that are approved to provide toll-quality

speech path. The following voice compression methods are supported for the K-CCIS – IP

with PVA application:

G.711 -Law – Highest Bandwidth

G.729 – Mid-Range Bandwidth

G.723 – Lowest Bandwidth

Each voice call requires at a minimum the bandwidth listed in the following table:

This includes the overheads of VoIP communication including signaling.

In voice communications, particularly Internet telephony, the mean opinion score (MOS) provides a numerical

measure of the quality of human speech at the destination end of the circuit. The scheme uses subjective tests

(opinionated scores) that are mathematically averaged to obtain a quantitative indicator of the system

performance. A score of 5.0 is the maximum for the Mean Opinion Score.

Data Calls (Modem Data) across the VoIP connection are only supported when the

Codec is used.

The CD-PVAA blade contains a regular TCP/RTP/IP stack that can handle real-time media.

The blade, from the network administration perspective, is an endpoint on the IP network.

The CD-PVAA with K-CCIS – IP with PVA application loaded uses Common Channel

Interoffice Signaling over IP networks. Currently this protocol does not allow for

communications across networks where Network Address Translation (NAT) is performed.

The audio quality of speech connections depends greatly on the available bandwidth

between the CD-PVAA blade in the data network. As the Internet is an uncontrolled data

network compared to an Intranet, using this application in an Intranet WAN environment,

with known (or controlled and assured) Quality of Service (QoS), is highly recommended.

Table 2-57 Minimum Bandwidth Required

Packetization

UNIVERGE SV8100

Default Jitter

Buffer Delay

K-CCIS – IP with PVA

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