Troubleshooting guide

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Cisco Broadband Local Integrated Services Solution Troubleshooting Guide
OL-5169-01
Chapter 1 Solution Overview
Solution Features
Percentage-Based Routing
Percentage-based routing allows call distribution of a specified percentage of calls to different route
groups. The percentage ranges can be specified to a granularity of 1 percent, and the ranges should cover
a total of 100 percent. A random number generator is used to sort calls into the specified percentage
ranges, and the percentage range is used to route each call.
Route ID
The route table is used when the routing policy is specified as route ID. A TG is selected based on the
trunk group selection policy specified in the route table.
Carrier-Based Routing
In a wholesale network environment, the wholesale network operator (NO) owns and operates the
facility. The NO provides transport facilities to carry voice calls on behalf of smaller SPs and for SPs
that are not facility based. Some SPs may own facilities terminating directly on NO equipment. The
Cisco BTS 10200 can route calls over the SP facilities, if a route exists on the SP facilities, or route calls
over NO facilities if SP based facilities do not exist.
This section includes the following topics:
• Carrier Selection for Outgoing Calls, page 1-34
• Carrier Selection for TG-Originated Calls, page 1-34
Carrier Selection for Outgoing Calls
For outgoing interLATA calls, the Cisco BTS 10200 selects the carrier based on the subscriber's
presubscribed inter-exchange carrier (PIC), or the dialed carrier ID if the call was a casual call.
For outgoing toll-free calls, the Cisco BTS 10200 receives the carrier ID based on a toll-free query to a
service control point (SCP).
For outgoing 500 (PCS rate) and 900 (premium rate) calls, the DESTINATION table can be provisioned
with unique carrier IDs for each of these call types. The Cisco BTS 10200 routes the calls via these
assigned carriers.
Carrier Selection for TG-Originated Calls
In a Class 4 environment, the Cisco BTS 10200 is connected to several PSTN switches. For trunk groups
(TGs) between the Cisco BTS 10200 and a Tandem switch, the TG table can be provisioned to route the
call based on either the carrier ID or the SP ID.
Trunk Group Selection Policies
The TG selection policies are applied once a route has been selected. If all the TGs in a route are busy,
the route can point to an alternate route.
TG selection policies are also applied based on the user requirements. The TG selection policies are not
applied if the user has not requested any capabilities. The selection policy supported is selection of TG
by cost.