AudioCodes Mediant 4000 SBC User Manual page 598

CHAPTER 25 Routing SBC
● If the source tag name "Type" equals "ITSP" (i.e., SIP message from the ITSP), then use
the value (port number) of the local port on which the incoming message from the proxy
server is received by the device, as the value of the destination tag name "Port". In other
words, the value could either be "6001", "6002", or "6003". This value is then used by the
IP-to-IP Routing table to determine to which IP PBX to send the message. For example, if
the destination tag value is "6001", the device identifies the destination as "PBX-1":
Index
Rule Set ID
Condition
Action
Action Subject
Action Type
Action Value
4. Open the IP-to-IP Routing table (see
configure the following IP-to-IP Routing rules:
● Routes calls from the IP PBXs (identified by the source tag name-value "Type=PBX") to
the ITSP (identified as an IP Group):
Index
Name
Match
Source Tag
Action
Destination Type
Destination IP Group
● Routes calls from the ITSP (identified by the source tag name-value "Type=ITSP") to the
IP PBXs (identified by the specific port assigned to the IP PBX by the value of the
destination tag name "Port"):
Index
Name
Match
Source Tag
Action
General
3
1
srctags.Type=='ITSP'
dsttags.Port
Modify
message.incoming.local-port
Configuring SBC IP-to-IP Routing
General
1
PBX-to-ITSP
Type=PBX
IP Group
ITSP
General
2
ITSP-to-PBX
Type=ITSP
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Mediant 4000 SBC | User's Manual
Rules), and then