Reliant Octel 300 Specifications download pdf (Page 136)

IP Office Product Description

IP Office 4.2

Page 136

Issue 18.b.- (08 July 2008)

What is the Maximum Number of Simultaneous VoIP Calls

Each IP Office can be fitted with an optional Voice Compression Module (VCM) to support VoIP connections.

· The IP406 can be fitted with a single module offering up to 30 simultaneous calls.

· The IP412 is capable of supporting two modules of all types, allowing up to 60 simultaneous calls.

· The IP500 is capable of supporting two VCM 32/64 modules allowing up to 128 simultaneous calls.

Does the IP Office support Fax over IP ?

The IP Office has a proprietary method for carrying Fax traffic on a VoIP call. IP Office does not currently

support the T.38 Fax standard. IP Office supports Fax speeds up to 14.4 Kbps. The bandwidth requirements

for a Fax call will initially be as per the specified or negotiated compression method and then the bandwidth

requirement will change to accommodate the Fax data. The Fax bandwidth will vary depending on the speed

with which the Fax devices are communicating and the type of link, at 14.4 Kbps the bandwidth requirement

will be approximately 27 Kbps on the LAN or 19 Kbps on a Point to Point WAN link with header compression

enabled.

Network Assessment

With IP Office, optimum network configurations can support VoIP with a perceived voice quality equivalent to

that of the Public Switched Telephone Network (PSTN). However, not every network is able to take advantage

of VoIP transmissions. It is important to distinguish between basic compliance with the minimal VoIP standards

and validated support for QoS which is needed to run VoIP applications over a data network.

With the exception of standalone configurations where IP phones connect directly connected to the ports on IP

Office, Avaya now requires that all customers formally audit their networks for IP telephony readiness before

attempting to install any VoIP application.

A network assessment should normally include:

· Physical inventory of all equipment inclusive of the current version of code, and configurations as

needed.

· An accurate and complete network topology for all networked sites, inclusive of IP addressing and

physical/logical connections.

· An evaluation of the network's topology to check that the design is both sound and reasonable.

· Measurement of packet loss, jitter and delay over the course of multiple days and measured on a per

minute basis. A graphical representation of the data is the preferred output method.

· Examination of QoS/Class of Service (CoS) parameters in place in the network.

· Summary of findings and possible actions to correct problems.

The assessment should leave you confident that the implemented network will have the capacity for the

foreseen data and voice traffic, and can support H.323, DHCP, TFTP, and jitter buffers in H.323 applications.

With this in mind, if you require support during or after an IP Office VoIP installation, a copy of your network

assessment documentation will be requested by your support channel.

For more details about available tools, resources and services to enable you to audit your network for VoIP

readiness, please contact your local Avaya representative.

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Reliant Octel 300 Specifications Page 136