NGN IMS System and Network Architecture

Front

What does NGN stand for?

Back

Next Generation Network

Front

What is the primary function of the I/S-CSCF in the NGN IMS architecture?

Back

It handles user registration signals and queries the HSS for user service assignments.

Front

What is the role of the S-CSCF in the NGN IMS architecture?

Back

It processes all call signals based on user data from the HSS.

Front

What does HSS stand for in the context of NGN IMS?

Back

Home Subscriber Server

Front

What is the purpose of the BGCF in the NGN IMS architecture?

Back

It routes calls to non-NGN domains.

Front

What is the function of the SBC-A in the NGN IMS system?

Back

It acts as a voice firewall, providing protection against service attacks and NAT traversal.

Front

What does ENUM stand for?

Back

Telephone Number Mapping.

Front

What is the significance of the ENUM ID in the NGN IMS architecture?

Back

It is used for routing calls based on the user's telephone number.

Front

What is the main purpose of the TAS in the NGN IMS architecture?

Back

It provides call processing logic and number normalization.

Front

What does MGC stand for in the context of NGN IMS?

Back

Media Gateway Controller.