WebEx Calling Chapter 1 1 Architecture of WebEx Calling - DEMO

Summary

This video discusses the architecture of Webex Calling, covering essential components like data centers, PSTN access, and on-premise interconnects. It explains how Webex data centers host routing functions, manage SIP trunk connections through access and peering SBCs, and ensure secure communication via TLS. Additionally, it outlines three PSTN access methods: Cisco Calling Plan, Cloud Connected PSTN from third-party providers, and on-premise PSTN services. The video highlights the flexibility of Webex Calling, enabling secure, scalable, and geographically diverse communication for users and businesses.

Takeaways

• 📡 Webex Calling architecture includes data centers, PSTN access, and on-premise interconnect options.
• 🏢 Each Webex Calling data center hosts routing functions for day-to-day administration and supports interfaces for user login.
• 🔄 The data centers contain two types of SBCs (Session Border Controllers): Access SBC (for customer-facing SIP trunks) and Peering SBC (for communications with PSTN and other providers).
• 🌐 Webex Calling endpoints use the public internet to register and communicate, with secure TLS (Transport Layer Security) for SIP communication.
• 🔐 SIP over TLS ensures secure communication between on-premise devices and Webex Cloud Calling.
• 📞 Webex Calling offers three types of PSTN access: Cisco Calling Plan, Cloud Connected PSTN (provided by third parties), and On-Premise PSTN.
• 📶 The Cisco Calling Plan allows endpoints to send signals to the Webex Calling platform and make calls to various regions such as India, the UK, and North America.
• 💼 Cisco Calling Plans provide flexible billing options, including bulk minutes, per-country billing, or local calls with DID (Direct Inward Dialing).
• 🔗 Cloud Connected PSTN involves third-party providers working with Cisco to deliver PSTN access.
• 🏠 On-premise PSTN services can be integrated into Webex Calling for users who require local PSTN access.

Q & A

What is the main topic of the video?

The video discusses the architecture of Webex Calling, including its data centers, PSTN access, on-premise interconnect, connection types, dial plan, media flow, and region.

What functions does the Webex Calling data center perform?

The Webex Calling data center hosts routing functions, provides interfaces for day-to-day administration, and hosts two types of SBCs (Session Border Controllers): Access SBC and Peering SBC.

What is the role of Access SBC in Webex Calling?

The Access SBC in Webex Calling terminates all customer-facing SIP trunks coming into Webex Calling, including endpoints.

What does Peering SBC handle in Webex Calling?

Peering SBC handles communication between providers, such as PSTN providers or cloud connect partners, by providing SIP connections into Webex Calling.

How does Webex Calling ensure a scalable and redundant data center?

Webex Calling ensures a scalable and redundant data center by using load balancers and other network functions, all managed and supported by Cisco.

How do Webex Calling endpoints communicate with the data center?

Webex Calling endpoints use the public internet to register and communicate with devices via the internet through the Webex Calling data center, establishing a secure TLS connection.

What is the purpose of TLS in Webex Calling?

TLS (Transport Layer Security) in Webex Calling is used to provide secure SIP communications between on-premise devices and the Webex cloud.

In what three ways does Webex Calling provide PSTN access?

Webex Calling provides PSTN access through three ways: Cisco Calling Plan, Cloud Connected PSTN provided by a third party, and on-premise PSTN services.

How does the Cisco Calling Plan work with Webex Calling?

The Cisco Calling Plan allows users to send signals from an endpoint to Webex Calling to communicate with the PSTN, enabling calls to various locations like India, the UK, or North America.

What billing options does Cisco offer for the Cisco Calling Plan?

Cisco offers billing options for the Cisco Calling Plan on a bulk minute basis or based on the country that is dialed.

What does Webex Calling provide for local calls within the Cisco Calling Plan?

For local calls within the Cisco Calling Plan, Webex Calling might provide a DID (Direct Inward Dialing) number.