CHAPTER34 Routing SBC
Mediant 1000 Gateway & E-SBC | User's Manual
Parameter Description
For example, assume the following Cost Groups:
■ "Weekend A": call connection cost is 1 and charge per minute
is 6. Therefore, a call of 1 minute cost 7 units.
■ "Weekend B": call connection cost is 6 and charge per minute
is 1. Therefore, a call of 1 minute cost 7 units.
Therefore, for calls under one minute, "Weekend A" carries the
lower cost. However, if the average call duration is more than one
minute, "Weekend B" carries the lower cost.
Configuring IP Group Sets
The IP Group Set table lets you configure up to 51 IP Group Sets. An IP Group Set is a group of IP
Groups used for load balancing of calls, belonging to the same source, to a call destination (i.e., IP
Group). Each IP Group Set can include up to five IP Groups (Server-type and/or Gateway-type
only). The chosen destination IP Group for each call depends on the configured load-balancing
policy, which can be Round Robin, Random Weights, or Homing (for more information, see the
table's description, later in this section).
Alternative routing within the IP Group Set is also supported, whereby if a chosen destination IP
Group responds with a reject response that is configured as a reason for alternative routing (see
Configuring SIP Response Codes for Alternative Routing Reasons) or doesn't respond at all (i.e.,
keep-alive with its' associated Proxy Set fails), the device attempts to send the call to another IP
Group in the IP Group Set (according to the load-balancing policy). For enabling Proxy Set keep-
alive, see Configuring Proxy Sets.
An example of round-robin load-balancing and alternative routing: The first call is sent to IP Group
#1 in the IP Group Set, the second call to IP Group #2, and the third call to IP Group #3. If the call
sent to IP Group #1 is rejected, the device employs alternative routing and sends it to IP Group #4.
Once you have configured your IP Group Set, to implement call load-balancing by IP Groups, do
one of the following:
■ In the IP-to-IP Routing table, configure the routing rule's 'Destination Type' parameter to IP
Group Set, and then assign it the IP Group Set in the 'IP Group Set' parameter.
■ If you are routing to IP Groups based on Dial Plan tags:
● In the IP Group Set table (see below), specify the tag name.
● In the IP-to-IP Routing table, configure the routing rule's 'Destination Type' parameter to
Destination Tag, and then specify the tag name in the 'Routing Tag Name' parameter.
For more information on IP-to-IP Routing rules, see Configuring SBC IP-to-IP Routing Rules. For
more information on routing based on destination Dial Plan tags, see Using Dial Plan Tags for
Routing Destinations.
IP Group Sets are configured using two tables with parent-child type relationship:
■ Parent table: IP Group Set table, which defines the name and load-balancing policy of the IP
Group Set.
■ Child table: IP Group Set Member table, which assigns IP Groups to IP Group Sets. You can
assign up to five IP Groups per IP Group Set.
The following procedure describes how to configure IP Group Sets through the Web interface. You
can also configure it through other management platforms:
■ IP Group Set Table: ini file [IPGroupSet] or CLI (configure voip > sbc routing ip-
group-set)
■ IP Group Set Member Table: ini file [IPGroupSetMember] or CLI (configure voip >
sbc routing ip-group-set-member)
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