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DEFINITY Enterprise Communication Server Release 9
Getting Started with the Avaya R300 Remote Office Communicator
Issue 1
November 2000
Avaya R300 Specifications and Network Design
25Bandwidth engineering considerations
2
C-LAN resources at DEFINITY ECS
Each station set will require one active TCP/IP control link for as long as the set is both
physically connected and the station is administered to “TTI” or “named” on the Avaya
R300 unit. Each trunk (digital or analog) will have a TCP/IP control link established for
the duration of an active call. A control link will consume one socket in the C-LAN board,
which has up to 442 sockets available for use.
The DEFINITY needs a number of C-LAN circuit packs greater than or equal to the total
socket usage divided by 442 and then rounded up.
IP Media Processor resources
In DEFINITY, the IP Media Processor supports audio conferencing and bearer
TDM-based traffic to IP-based traffic. In order to provide bearer conversion, this module
supports voice processing algorithms through DSPs designed to support 64 resources:
subtract one resource per G.711 call, subtract two resources per G.729 call.
DSP resources
The DSP farm on the Avaya R300 converts calls from TDM to IP for voice/fax traffic
through the Avaya R300 across an IP network to DEFINITY or to another Avaya R300.
The DSP-16 card is available now; the DSP-30 card will be available in the near future.
The DSP farm can convert, at most, 30 voice streams between IP and PCM-TDM.
Conversions are not required between two voice (analog or DCP) endpoints within the
same Avaya R300 or between these voice stations and incoming or outgoing calls on local
trunks connected to the Avaya R300.
LAN/WAN access/routing equipment
The supporting network is arranged in terms of a negotiated network service between the
customer and the service provider. This service is a function both of service type (for
example, fractional T1/E1, full T1/E1, frame relay) and the number of network interfaces
(for example, multiple T1/E1). The network requirements for any DEFINITY IP Solutions
customer is found in the DEFINITY IP Solutions Voice Quality Network Requirements or
on the web at www.avaya.com.