Switching Namie

Switching Switching system were essential to telecommunication network operation in this time. Function generated by switching system or subsystem its, aiming to provide perkidmatan to clients.During communication system development, design switching system has become more sophisticated. It bertujaan to provide added convenience which enables communication network provide more service to users and oversee operation and maintenance. Switching type used in Malaysia was Stored Program Control (SPC). Other than SPC, distribution technique channel staggered also used. Broad frequency band used service given telephony was 300-3400Hz which it is human voice frequency. As such, all equipment telephony and extension line between that instruments must be cope handling in broad that band. In Malaysia, station which connects between one consumers by other consumer in get to know as ibusawat (exchange). Assembling ibusawat ibusawat in network telephony will produce one Hiraki Kebangsaan, such as in Rajah disebelah.

PPU

PPZ

PPZ

PPK

PPT

P

PPK

PPT

P

P

PPT

P

P

PPU - Primary switching centre PPK - Area Switching Centre P - Customer

PPK

PPT

P

P

PPT

PPT

P

P

PPK

P

P

PPT

P

PPZ - Zone Switching Centre PPT - Local switching center - Cable two wire Rajah 1.1 Hiraki National

P

PPT

P

P

P

1.1

Ibusawat Ibusawat was one centre where all able telephone line connected to enable speech relationship achieved. Equipment found in ibusawat function as switch to facilitate joining process . Now, most ibusawat is GSC type (Group Switching Centre).

Ibusawat may be divided to 3 types namely : i. ii. iii.

iv. v.

ibusawat local - there is within one same area. ibusawat tandem - linking two or more ibusawat local and his key feature not connected to clients. ibusawat international - ibusawat which connects ibusawat tandem whole country. Main function ibusawat is : i. Record customer metre which made penggilan, starting from call made, time, phone number called for call to ibusawat another, and also call to ibusawat major same. ii. Oversee process penyuisan between customer and ibusawat. iii. Annotate customer demand like providing phone number, make permotongan metre temporarily etc. Provide supervision signal such as dial tone, ringing, busy, interference and number tone that does not contactable . Control conversation quality and record service quality ibusawat.

Unit Talian

Pensuisan

Unit Saluran #1

#1 #2

#M Penjana Nada DTMF/ Decadic

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1 2

Pengimb as

Pemacu

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Pendering

Ingatan

CPU

Pengarah Kawalan

Fail