Avaya IP600 8

Overview for Avaya IP600 Internet Protocol Communications Server

555-233-001— Issue 5— November 2000

8 Enterprise Class IP Solutions

The capabilities and applications of Avaya IP600 are extended with the introduction of Enterprise Class IP

Solutions (ECLIPS). ECLIPS supports audio/voice over a LAN or WAN, and it ensures that remote workers

have access to communication system features from their PCs.

Although voice quality can and will vary based on LAN conditions, Avaya IP600 offers features that enable

management of the quality of voice communications. Avaya IP600 supports 3 Quality of Service methods:

•IP standard, Differentiated Services (DiffServ) — sets Type-of-Service (TOS) in

IP header of voice packets

•Ethernet standard 802.1 p/q — sets priority level in the layer 2 Ethernet packet

header

•UDP port range administration — ports largely dedicated for voice packets

IP trunk bypass to PSTN trunk is also supported with administrable thresholds for latency and packet loss.

This release also introduces hairpin and IP-IP direct connections, two features that make voice communications

more efficient. These features increase the efficiency of voice communications by reducing both per port costs

and IP bandwidth usage. Hairpin connections reroute the voice channel connecting two IP endpoints, so that the

voice goes through the media processor board in IP format, thereby bypassing the DEFINITY TDM bus. IP-IP

direct connections route the voice channel connecting two IP endpoints by sending the voice directly through the

LAN or WAN between the two endpoints, instead of carrying a mixed connection of IP signaling and TDM bus

signaling.

To maximize voice quality using ECLIPS, you must consider both your hardware and network configurations.

For example, with IP Softphones, you can send the audio over traditional circuit switch lines, providing high

quality voice, or over IP using LAN connections. When making calls over the LAN, voice quality will vary and

may be unacceptable if you don't tune your computers and data network.

Avaya IP600 supports a trunk configuration, four types of softphones, and three models of IP telephone, using

the TN2302AP, which is an IP-media processor circuit pack. The TN2302AP IP media p rocessor provides H.3 23

trunk connections and H.323 voice processing for IP telephones. The features that use the TN2302AP also

require the TN799C C-LAN circuit pack.

ECLIPS support the TN2302AP IP media processor, which enables H.323 trunk

service using IP connectivity between two DEFINITY systems. The H.323 trunk

groups can be configured as DEFINITY-specific tie trunks, generic tie trunks, or

direct-inward-dial (DID) “public” trunks. In addition, the H.323 trunks support ISDN

features such as QSIG and BSR.

Up to 64 Avaya IP600s can be networked through DCS with full feature

transparency. More than 1000 Avaya IP600s can be networked with near full feature

transparency. Avaya IP600s network seamlessly with DEFINITY systems.