Differentiate between GSM and CDMA - Telecommunications?What is SS7? - Telecommunications

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What is SS7?

- A global standard for telecommunications for channel signaling. - The Common Channel Signaling System (SS7 / C7) standard defines various procedures and protocols for Public Switch Switched Telephone Network to exchange information over digital signaling network.- Providing call control, remote network management is the primary functions of SS7.- Controlling messages are exchanged between SS7 telephone exchanges through SS7.- The messages are transformed from Signaling Points and SS7 Signaling Transfer Points.

GSM- GSM uses multiple frequencies.- Uses TDMA and FDMA for accessing signals.- The voice rate is9.6 KBPS.- Uses less bandwidth.CDMA- CDMA uses single frequency as carrier.- The voice rate is.4 KBPS.- CDMA power control to access method is better as Phased Locked Loops are used.- Follows soft handoff, hence call handling is more efficient.   RE: Differentiate between GSM and CDMA - Telecommunications syed rizwan fahed () Gsm is a second generation digital network and cdma is a third generation digital network   RE: Differentiate between GSM and CDMA - Telecommunications Mohammed Zaid Shaikh (-5-) Gsm is3rd generation network c and cdma is2nd generation   RE: Differentiate between GSM and CDMA - Telecommunications Anil Bamane () GSM:uses TDMA & FDMA multiple access techniquesmodulation technique0.3 GMSKchannel BW (carrier separation) is kHzpower control2-7 times /secdiscontinuous transmissiondata rate.8 kpbsadaptive equilizer is used at receiver to avoid ISICDMA:uses CDMA multiple access techniquesmodulation technique QPSKchannel BW (carrier separation) is1.MHzpower control times /seccontinuous transmissiondata rate.4 kpbsRake receiver is used at receiver to avoid ISI

 

 

 

 

A global standard for telecommunications for channel signaling. - The Common Channel Signaling System (SS7 / C7) standard defines various procedures and protocols for Public Switch Switched Telephone Network to exchange information over digital signaling network.- Providing call control, remote network management is the primary functions of SS7.- Controlling messages are exchanged between SS7 telephone exchanges through SS7.