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VoIP Implementation with a G700 Media Gateway and an S8300 Media Server
Avaya X330WAN User’s Guide 59
In Figure 4.10, Site A contains four IP phones and a data LAN connected via a
P333T-PWR switch to a S8300 Media Server. The S8300 Media Server houses a
X330W-2USP expansion module that is connected to the WAN via a 128Kbps V.35
interface. Following are the connection details for Site A:
• The IP phones are configured with the following DSCP tagging:
—Voice = DSCP 46
— Voice control = DSCP 34
Note: The Policy list in the next configuration is based on the assumption that the
Media Gateway, Media Server, and the IP phones send VoIP control packets with a
DSCP value of 34 and voice with a DSCP value of 46. If any of the components of the
topology are sending control or voice packets with other DSCP values, you must
make changes in the Policy list.
• The S8300 Media Server default RTP UDP port range is 2048 to 3028.
• Network IPs (all 24 mask):
— IP phones - 1.1.1.0 (VLAN 1)
— Data - 11.11.11.0 (VLAN 2)
— Serial - 2.2.2.1
— Gatekeeper - 149.49.54.81
— MGP - 149.49.54.82
— VoIP (MGP) - 149.49.54.83
Site B contains four IP phones and a data LAN connected to a P333T-PWR switch in
a stack with a G700 Media Gateway. The G700 Media Gateway houses a
X330W-2DS1 expansion module that is connected to the WAN via a two-timeslot
(128Kbps) T1 interface. Following are the connection details for Site B:
• IP phone are configured with DSCP tagging:
—Voice = DSCP 46
— Voice control = DSCP 34
• The G700 Media Gateway default RTP UDP port range is 2048 to 3028.
• Network IPs (all 24 mask):
— IP phones - 3.3.3.0 (VLAN 1)
— Data - 33.33.33.0 (VLAN 2)
— Serial - 2.2.2.2
— MGP - 4.4.4.10
— VoIP (MGP) - 4.4.4.11