Administration Guide - Avaya Support

VMSC - Messaging Application Server (MAS) Configuration
Configuring the Screen Controls
! MAS Corporate IP Address: Enter the IP address of the MAS. This is the
IP address that the MAS uses to connect to the corporate LAN.
! PBX IP Address: Enter the IP address assigned to the device that is
terminating the H.323 signaling link.
— For a Definity PBX, this is the IP address of the PBX C-LAN card.
— For a MultiVantage or Communication Manager PBX, this is the IP
address of the PROCR.
! Port: Enter the port number on the MAS that would be used for
transmission of signaling information and MWI information. By default, the
port number is 1720.
! UDP Port Range: Enter a minimum and maximum port number to specify
a block of user datagram protocol (UDP) port numbers to be used for audio
connections.
The H.323 call setup protocol dynamically negotiates the UDP ports
within the specified range that are available for use. The voice channels
use the available ports from this UDP port range for transmission of
voice data. The default range is 5000 through 5999.
! Packet size (ms): Enter, in milliseconds, the size of the real time protocol
(RTP) packets that are used to transmit H.323 media over the IP network.
The packet size represents the amount of voice data sent per packet. The
value you enter here should match the packet size sent by the PBX. Packet
size is typically 30 milliseconds.
The packet size sent by the PBX is configured at the time of
administering the codec type on the PBX. See the IP Codec screen on
the PBX to check the packet size value configured on the PBX. For more
information on configuring your PBX, see the PBX configuration
documentation.
! Enable Tunneling: Select to enable tunneling. Tunneling is the
encapsulation of protocols that are at the same layer, into one another.
When you enable tunneling, the QSIG message set, which contains call
information and MWI information, is encapsulated in H.323 packets. This
check box is selected by default.
! Enable Fast Start: Select to enable this feature. Fast Start, also known as
Fast Connect, is a call setup method that bypasses some initial steps in
order to reduce the connection setup time. This feature makes the call
setup faster as the voice data transmission can start immediately after
sending a Fast Start message. This check box is selected by default.
! Silence Suppress: Select to enable silence suppression. Enabling silence
suppression prevents the transmission of voice packets during silence.
Silence suppression ensures that no bandwidth is used during periods of
silence.
Avaya Modular Messaging Release 3.1 with the Avaya MSS
4–54 MAS Administration Guide
February 2007