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Supported SCN Network Layouts

The allowed arrangement of H323 SCN lines between the IP Office systems depends on the lowest software level of any IP Office system in the network. Note that we are referring to H323 SCN lines configured in the IP Office configurations. The actual IP network configuration, including IP routes in the IP Office configurations, can differ as per the customer network requirements.

IP Office Software Level

Pre-5.0

5.0+

Maximum Number of IP Office Systems

16

32

Maximum Number of Users

500

500

Maximum H323 SCN Line Hops Between Systems

5

5

Star H323 SCN Line Layout

tick

tick

Serial H323 SCN Line Layout

tick

tick

Mesh H323 SCN Line Layout

cross

tick

 

Star/Serial Layouts
The following are examples of star and serial layouts. These are the only types of layouts supported for Small Community Networks containing any pre-IP Office 5.0 systems.

scn networks okay

---- = IP network, | = IP Office H323 SCN Line.

 

Mesh Layout
The use of 'mesh' layouts connections is only supported for a Small Community Network of IP Office 5.0 systems. A mesh layout is one where there is more than one possible H323 SCN Line route between any two IP Offices. The following are examples of mesh layouts. Mesh, star and serial layouts can be combined.

scn networks nokay

 

SCN Signalling
IP Office SCN uses a signalling similar to RIP is order to update each other of there presence. This traffic can be seen in the IP Office System Monitor application as AVRIP packets.

This traffic is is sent to port 50795 on which each IP Office system listens.

Each IP Office in the SCN transmits an update every 30 seconds. Additionally BLF updates are transmitted when applicable up to a maximum of every 0.5 seconds. Typically the volume is less than 1Kbps per IP Office system.

 

 

© 2009 AVAYA
15-601011 Issue 23.p.-
07:07, 30 October 2009
(scn_supported_scn_network_layouts.htm)

Performance figures, data and operation quoted in this document are typical and must be specifically confirmed in writing by Avaya before they become applicable to any particular order or contract. The company reserves the right to make alterations or amendments at its own discretion. The publication of information in this document does not imply freedom from patent or any other protective rights of Avaya or others. All trademarks identified by (R) or TM are registered trademarks or trademarks respectively of Avaya Inc. All other trademarks are the property of their respective owners.

Last Modified: 29/04/2009