软交换与ngn作业（Soft switch and NGN operation）.docVIP

软交换与ngn作业（Soft switch and NGN operation） A single choice (a total of 5 items, a total of 100 points) () the information used primarily to store user data and where the user is located. HLR Signaling gateway Trunking Gateway Access gateway Point of knowledge: second stages of operation Student answer: [A;] Score: [20] test scores: 20 Prompt: (c) through its adaptation function, the interworking between the No.7 signaling network layer and the IP network transmission protocol is realized, and the No.7 signaling high-level message is provided to the softswitch. HLR Signaling gateway Trunking Gateway Access gateway Point of knowledge: second stages of operation Student answer: [B;] Score: [20] test scores: 20 Prompt: In the case of the IP network and the interworking of PSTN, the echo cancellation function is accomplished in (). Trunking Gateway Signaling gateway Network management equipment Billing authentication center Point of knowledge: second stages of operation Student answer: [A;] Score: [20] test scores: 20 Prompt: (in a soft switching network) located in the access layer, responsible for the conversion between different media formats. Media gateway Media resource server Signaling gateway application server Point of knowledge: second stages of operation Student answer: [A;] Score: [20] test scores: 20 Prompt: The processing power of a soft switching device is measured in terms of (). Busy time trial call times BHCA Number of users that can be accessed Number of accessible trunks Maximum Latency Point of knowledge: second stages of operation Student answer: [A;] Score: [20] test scores: 20 Prompt: A single choice (a total of 5 items, a total of 100 points) () an interface between the MGW in the R4 core network, which carries the users voice media stream within the R4 core network. Mc interface Nc interface Nb interface Abis interface Point of knowledge: third stages of operation Student answer: [C;] Score: [20] test scores: 20 Prompt: (error) (b) the first three