Troubleshooting guide

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Cisco Broadband Local Integrated Services Solution Troubleshooting Guide
OL-5169-01
Chapter 10 Troubleshooting the Cisco BTS 10200 Softswitch
Architecture
Interfaces
In the Cisco BLISS for Cable solution, an interface is any device that the solution components use to
accomplish internetworking. The relevant interfaces in the solution are the following:
• Trunking Gateway Interface—Trunking gateways (TGW) are high-density PSTN to packet
network gateways. These gateways typically support thousands of DS0 circuits and provide the
bearer paths between PSTN circuit-switched facilities and packet-switched networks.
Two types of links are required for a TGW to connect with a peer PSTN switch:
– SS7 access link via the STP and the call agent
– Bearer circuits through the TGW
The Cisco BTS 10200 Softswitch supports these links by sending the proper SS7 messages to the
STP, as well as providing bearer channel control through MGCP between the CA and the TGW.
• Integrated Access Devices (IAD) Interface—An IAD supports voice, data and video signal
transport over a single circuit. The IAD distributes these signals to telephones (voice) and LANs
(data and video).
• Announcement Server Interface—An announcement server is a media server that stores
network-based announcements, and plays them to a caller upon a request from the CA. The
announcement server interfaces with the Cisco BTS 10200 Softswitch using MGCP protocol.
• Record Keeping Server Interface—A record keeping server is
• CALEA Server Interface—to be determined
• Feature Control Protocol Interface—Cisco developed the Feature Control Protocol (FCP) as a
Multipurpose Internet Mail Extension (MIME) application on top of the Session Initiation Protocol
(SIP). FCP uses SIP for transport, and is the external protocol between the feature server and the
call agent. It carries call state control and status information that is needed for external feature
control, and provides an interface for both external and internal feature servers.
External feature servers are not supported in this release of the Cisco Broadband Local Integrated
Services Solution.
• Operations Support System Interfaces—The Cisco BTS 10200 Softswitch OSS interface consists
of the following parts:
– Command Line Interface (CLI) over Telnet
– Common Object Request Broker Architecture (CORBA)
– SNMP traps, status, control and measurement
– Billing interface (FTP)
– Bulk provisioning (FTP)
• Element Management System Interfaces—The Element Management System (EMS) provides a
flexible mechanism to transport information over any protocol to any external device. The EMS
interface design takes into account that each carrier has its own unique set of Operations Support
Systems (OSS). The EMS provides a decoupling layer between the external protocols used within
the service provider’s network and the internal protocols of the FS and CA. The Cisco BTS 10200
Softswitch system does not need to interpret the specific data formats used by the carrier’s other
network elements.
Local operators use a workstation or PC with a command line interface (CLI) to communicate with
the EMS. Sessions can be either interactive or batch mode:
– Interactive—using Telnet
– Batch mode—using File Transfer Protocol (FTP)