Troubleshooting guide

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Cisco Broadband Local Integrated Services Solution Troubleshooting Guide
OL-5169-01
Chapter 1 Solution Overview
Solution Features
ANI Screening
Automatic number identification (ANI) is used for long distance access service. The ANI screening
feature validates the ANI on incoming feature group D calls from the PSTN before routing. All ANIs
supported by the Cisco BTS 10200 Softswitch are stored in the feature server database. If an ANI is not
available, or does not appear in the feature server ANI table, the TG default data is checked to see if
casual calls are allowed. If casual calls are not allowed, the call is denied and routed to an announcement.
If the ANI exists in the table, the ANI status is checked next. The ANI status can either be allowed or
blocked. If the status is blocked, the call is blocked and routed to an announcement. The ANI table also
includes information on class of service (COS), and authorization/account codes.
Class Of Service (COS) Restrictions
This service allows blocking calls based on their originating line type, for example, regular subscriber,
hotel/motel, coin- phone, prison lines, and so forth. When the CA receives the called and calling party
numbers, the following screening checks are performed (in this order):
• II white list and black list
• Called number white list and black list (domestic or international)
• Directory assistance calling restriction
• Operator-assisted calling restriction
• Type of call restrictions (local calling or international calling toll restriction, for example)
• Calling party is allowed to call the called party (check if restricted by COS)
When multiple COS restrictions are assigned to a call, then the most restrictive COS for that call is used.
Regulatory Features
Regulatory features on the Cisco BTS 10200 Softswitch consists of Emergency Services (911), Local
Number Portability, NPA Split Support and Legal Intercept.
Emergency Services (911)
Emergency services is a public safety feature providing emergency call routing to a designated
emergency service bureau (ESB), normally called the public safety answering point (PSAP) in the
United States. The 3-digit 911 number is assigned for public use in many areas of the United States and
Canada for reporting an emergency and requesting emergency assistance. Depending on municipal
requirements and procedures, an ESB attendant can transfer the call to the proper agency, collect and
relay emergency information to the agency, or dispatch emergency aid directly for one or more
participating agencies.
Local Number Portability
Local Number Portability (LNP) permits subscribers who change their local phone company to keep
their existing telephone number. An FCC order requires this feature in the 100 top metropolitan service
areas in the United States.L NP permits calls to be routed to the subscriber’s new local switch without
any particular per-call action required of either the calling or called party.