Cisco Systems OL-12397-13 manual Measurements, Events and Alarms, Validation of ACK Request

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Chapter 2 SIP Subscribers

SIP Registration and Security

2.When a Contact header is present on a reliable 1xx or 2xx response, the Contact FQDN/IP address of the response is verified to resolve to the Secure-IP1.

If the address does not resolve properly, the response is dropped. This has the same result as the non-receipt of that response, such as would happen with a call failure.

3.The response for a BYE sent by Cisco BTS 10200 is not validated. This is the least likely point in a call for theft.

Rules for Sending a SIP INVITE Message from the BTS 10200

When a SIP INVITE message is sent to a SIP endpoint, the following occurs:

1.The INVITE is sent to the registered contact of the endpoint. If there is no registered contact or if the registered contact has expired, the INVITE is not sent and the call is declined.

2.Any static contact provisioned for the subscriber is ignored.

Note Provisioning of static contact is not allowed for secure SIP endpoints; therefore, this is merely due diligence.

Validation of ACK Request

When a SIP ACK message is received from a SIP endpoint, the following occurs:

1.The ACK for a 200-class response is validated like any other SIP request.

2.The ACK for a failure response (3xx or higher) is not validated.

Measurements

The following TMM counters are supported for secure FQDN violations:

A SIA-SECURE_FQDN-VIOLATION-REQ counter is incremented when a SIP request fails the validation for secure SIP endpoints.

A SIA-SECURE_FQDN-VIOLATION-RESP counter is incremented when a SIP response fails the validation for secure SIP endpoints.

Note For a full list of measurements, see the Cisco BTS 10200 Softswitch Operations and Maintenance Guide.

Events and Alarms

A Warning event is raised when a SIP request or response fails the validation for secure SIP endpoints. The alarm has the following attributes:

Type: SECURITY(6)

DESCRIPTION: Secure SIP Endpoint Validation Failure

SEVERITY: WARNING

Note For a full list of events and alarms, see the Cisco BTS 10200 Softswitch Troubleshooting Guide.

Cisco BTS 10200 Softswitch SIP Feature and Provisioning Guide, Release 5.0

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OL-12397-13

 

 

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Contents SIP Subscribers A P T E RSIP Registration and Security SIP Phone InitializationProvisioning a SIP Subscriber Enhanced SIP Registration DescriptionProvisioning Commands ExampleEnable or Disable Secure Fqdn for an Existing Subscriber Provision a New SIP SubscriberRegistration Expires OperationsCisco BTS 10200 Challenges Registration Call Processing ValidationReceived SIP Response Message SecurefqdnEvents and Alarms MeasurementsRules for Sending a SIP Invite Message from the BTS Validation of ACK RequestSIP User Authentication AORSIP Subscriber Calls Provisioning Session Timers for SIP Subscribers SIP Timer Values for SIP SubscribersDiversion Indication for SIP Subscribers ACR AcractAcrdeact AcactCFB CfbvaCfbvd CfbiCwdi CidsdCidss CidcwDrcw DrcwactDND DndactOcba OcbdOcbi OsfgCisco BTS 10200 Softswitch-Based Features SummaryCPT CidsCall Forwarding Call Forwarding Activation and DeactivationCall Forwarding to an E.164 Number or an Extension Number Detailed Provisioning Procedure and Feature DescriptionCalling Name and Number Delivery Direct Inward Dialing Customer Access TreatmentCaller ID Delivery Suppression Direct Outward Dialing Do Not DisturbOperator Services 0-, 0+, 01+, and 00 Calls Vertical Service Code FeaturesCentrex Dialing Plan Extension Dialing User-Level PrivacySupported VSC-Enabled Features for SIP Endpoints Planning VSCs In Networks with SIP SubscribersVoice Mail VM ActionsVM Deposit MWI NotificationCalling Back a Message Depositor VM Implementation for Centrex SubscribersRetrieving VM VM Within a Single Centrex Group Add the SIP trunk groupProvisioning Voice Mail Across Multiple Centrex Groups Jointly Provided Features Text-GUI FeaturesSupported Features Accessing FeaturesSupported Handsets SIP HandsetCall Transfer Blind and Attended with Refer SIP Software ClientsPhone-Based Features Distinctive RingingDistinctive Ringing for Centrex did Calls CwcidSIP Subscribers Phone-Based Features OL-12397-13

OL-12397-13 specifications

Cisco Systems OL-12397-13 refers to a specific training course or certification related to Cisco's networking technologies and solutions. While precise details about OL-12397-13 may vary, it typically encompasses various features, technologies, and characteristics central to Cisco's offerings in networking and cybersecurity.

One main feature of the course is its comprehensive curriculum designed to provide learners with in-depth knowledge of Cisco’s networking architecture and best practices. The course often covers topics such as routing and switching, network security, wireless networking, and automation, enabling participants to understand the complex interactions within a network environment.

Another significant inclusion in the OL-12397-13 curriculum is an emphasis on emerging technologies. This may include training on software-defined networking (SDN), Internet of Things (IoT) solutions, and cloud-based networking. By integrating these modern frameworks, participants can grasp how to manage and optimize their network infrastructures for current and future demands.

A key characteristic of Cisco certification courses is the hands-on training component. Classes may involve lab sessions where students can apply theoretical knowledge practically by configuring devices, troubleshooting network issues, and implementing security protocols. This experiential learning ensures that learners are prepared to face real-world networking challenges.

The course also aims to instill best practices in network management and monitoring. Concepts such as network design, implementation strategies, and the use of network management tools are pivotal to ensuring efficient and secure operations within an organization.

Moreover, the emphasis on security throughout the OL-12397-13 course reflects the growing need for robust cybersecurity measures in networking. Participants are taught how to identify vulnerabilities, implement security measures, and respond to potential threats, which is crucial in today’s digital landscape.

Networking professionals pursuing Cisco certifications find OL-12397-13 to be instrumental in developing their skill sets, enhancing their career prospects, and enabling them to contribute effectively to their organizations. Overall, OL-12397-13 serves as a gateway for individuals looking to solidify their understanding of Cisco's technologies while preparing for future advancements in the field of networking. With a focus on both foundational knowledge and cutting-edge trends, it positions learners to excel in a rapidly evolving tech landscape.