- This topic has 34 replies, 1 voice, and was last updated 10 years, 3 months ago by Tieu Ngoc.
13th November 2003 at 07:29 #36841Delegun waleGuest
Pls I need to really understand the flow of infomation in CDMA network rigth from Mobile set of caller to the mobile set of the called .
Thank you.13th November 2003 at 08:02 #36842Prabhakar vermaGuest
there is no difference in the call flow in a CDMA network and GSM network13th November 2003 at 10:18 #36843PankajGuest
Except for the messages that are being exchanged between the entities.13th November 2003 at 12:55 #36844ScotGuest
What are the entities available in a CDMA Network?
Scot14th November 2003 at 06:57 #36845Prabhakar vermaGuest
I think i will wait for panjak to give his comment before doing so..
what do you say pankaj19th November 2003 at 07:58 #36846PankajGuest
The entities are sameas in case of GSM, BTS, MSC,VLR, HLR and MS. However what i menat was that the messages exchanged between these entities are different as comapred to GSM because the standards are different and the protocols are different.
Hope this clarifies 🙂20th November 2003 at 08:58 #36847ScotGuest
BSC – They are Calling it as CBSC
Rgds24th November 2003 at 06:33 #36848prabhakar vermaGuest
we missed a small element in the phase that is STP.
American standards considers STP to be a separate network element and prefer a different Switch for it all together , where as european consider STP to be a part of the Switch, hence no different Switch for that . The Basic switch itsself acts as an STP.31st December 2003 at 11:19 #36849sujeeshGuest
Some venders not using BSc.like lucent they are using ECP(Executive celluluar processor, Flexent Mobility Managetr etc.12th January 2004 at 05:37 #36850prabhakar vermaGuest
i don’t agree with u on this..
ECP can be considered as a BSC .12th January 2004 at 16:25 #36851PankajGuest
The issue is not the specific implementation by any vendor. If Lucent has the functionality of BSC integrated into the MSC (in form of the ECP or DCS or FMS), that is specif to them. However the standards identify the BSC and the MSC as two seperate logical entities. So let us not get into which vendor implements how but ultimatly the functionality is met. This is somewhat equivalent to having a standalone HLR vs integrated HLR that many vendor implement as an option.13th January 2004 at 11:57 #36852ScotGuest
Ok I know that there are some Networks with ALCATEL-S12-Core Switch and MOTOROLA CBSC Entities.
If the operator wants to replace it with some Lucent Product,can we use the ECP ?
rGDS14th January 2004 at 14:34 #36853KrishnaGuest
BSC stands for Base station controller which could be equivalent to a combination of CSN + Cell in Lucent architecture. CSN (cell site node)is a circuit pack in a centrally located MSC and Cell could be a modcell, microcell, series-11 or micro-mini etc which could be anywhere in the field. ECP is the central cpu+ of the MSC. Coming to your q. if the non-Lucent operator supports IOS standards (Inter operability Specification standard) and is CDMA compliant then the answer is yes.14th January 2004 at 14:45 #36854KrishnaGuest
After further discussions found out that Lucent may still be working on IOS compliance on their cells and currently it may not be possible to connect a Lucent Cell to a non-Lucent Mobile switch. Sorry. May be possible in future.14th January 2004 at 15:53 #36855pGuest
There are few examples of Lucent MSC supporting other vendor’s BSC in North America. But Krishna you are right they probably do not want to propogate that feeling and for waht ever reasons.