#TITLE_ALTERNATIVE#

• Main Author: MULYANA (NIM 23205016); Pembimbing : Dr. Kuspriyanto dan Dr. Aciek Ida W.D., ASEP
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/14020
• Institution: Institut Teknologi Bandung

Softswitch is an architecture comprises of entities that provided call control in IP networks. Sofswitch designed to improve the weakness of trditional switch (SPC digital circuit switch) in PSTN/PLMN. Softswitch also as intermediate to bring evolution of PSTN/NGN towards NGN. Softswitch architecture separate among control part, application and transport part. By this way, softswitch architecture can be developed independently among it’s element (parts). Softswitch elements may be placed far away each other geographically over IP networks to cover the large area networks with high traffic intensity of subscribers activity. Softswitch element (or known as Media Gateway Controller / MGC) is a central control part of the architecture, controls the other parts or elements (i.e one or more Access Gateway(s)/AG, Signaling Gateway(s)/SG, Trunk Gaway(s)/TG) over IP networks. This situation potentially increase of Softswitch delay that could be decrease it’s performance and it means decrease of subscriber Quality of Service (QoS).<p>This thesis simulate how the softswitch handels the call in three scenarios. The first one is to handle the call request between two Access Gateway’s subscriber (known as, the Class 5 Softswitch architecture), the second, is call request between two PSTN subscribers that connected to a Signaling Gateway and a Trunk Gateway respectively (known as, the Class 4 Softswitch architecture), and the third scenario is the call between two SIP phone that connected to the Local Area Networks. Each scenario generate call request independently to achieve multi threading level. Each call consits two steps, i.e. call setup and clear down, each simulate processing of protocol communication between Softswitch and other elements (simulate standard protocols : SS7, Sigtran, Megaco and SIP) and also simulate internal processing of each element (Access Gateway, Signaling Gateway, Trunk Gateway and Softswitch itself). The output of simulator examine and verify using M/G/1 queueing model.<p>Simulation show that call setup delay characteristic has almost the same with the queueing model M/G/1 with deviation 4% (the standard is below 5%). Mean of call setup delay is 187 ms, it means the simulator has equivalent with 19251 BHCA of Softswitch capacity.