Troubleshooting guide

1-33
Cisco Broadband Local Integrated Services Solution Troubleshooting Guide
OL-5169-01
Chapter 1 Solution Overview
Solution Features
• Percentage-Based Routing, page 1-34
• Route ID, page 1-34
Least-Cost Routing
With least-cost routing (LCR), the least expensive Trunk Group (TG) in a route is chosen. The TGs in
a list may be provisioned in any order. The call processing function will find the relative cost of each
TG in the route from the TG table and order them from least to most expensive. The least expensive idle
trunk will be selected from this newly ordered TG list.
Prefix-Based Routing
Prefix-based routing is used to route calls to an inter-exchange carrier. A service provider can choose
to route calls over different TGs based on the prefix dialed.
The supported call types and their associated prefixes are:
• National (1+)
• International (011+)
• Operator (0-, 00)
• National operator (0+)
• International operator (01+)
• Toll free (8xx)
• Cut-through calls (101xxxx+#)
• Directory assistance (555-1212, NPA-555-1212)
Line-Based Routing
Routing of calls can be based on the originating subscriber line class (such as coin, coinless, hotel/motel
or multiparty). If an incoming call is received over a feature group D SS7 TG, the originating line
information parameter is used to determine the route.
ANI-Based Routing
Automatic Number Identification (ANI) routing is based on the subscriber ID of the calling party. The
service provider can enable ANI-based routing by setting the ANI-BASED-ROUTING flag in the
TRUNK-GRP table. When a call is received by the Cisco BTS 10200, the Cisco BTS 10200 performs a
subscriber lookup based on the ANI (DN), and uses the subscriber properties to route the call.
Region-Based Routing
If region-based routing is required, the Cisco BTS 10200 uses a look-up table to convert the calling
party’s dialing number (DN) to a region. The Cisco BTS 10200 then routes the call according to the
information provisioned for this region. If ANI is not available, the Cisco BTS 10200 routes the call
according to the region assigned to the originating TG.
Time of Day (TOD) Routing
TOD routing is based on day of year (DOY) and day of week (DOW)/time of day (TOD). If a matching
DOY entry is found, the call is routed on the basis of the DOY. Otherwise the call is routed based on the
DOW/TOD table. If an entry corresponding to the DOW/TOD is not found, a default entry should be
provided in the database for routing.