- This topic has 16 replies, 1 voice, and was last updated 12 years, 3 months ago by bahar.
30th December 2005 at 14:28 #43579MadhuGuest
I A and B are in different MSC, and there is a call drop because of some problem in A network.
1)Will this be a normal call B
2)or will it be a call drop both in A and B.
2)What messages will the BSC get in this case.
madhu3rd January 2006 at 03:54 #43580Dear MadhuGuest
1.I think there is not always if call drop happened in A network cause call drop to in B network. for example maybe cause happened in outgoing call from network A so there is no problem with network B cause network be still can call to A network.
2.Message that cause problem and when problem happened3rd January 2006 at 05:10 #43581Hi MadhuGuest
Can u plz tell me different reson for call drop.
Does uplink interferance affect the call drop?how can we optimization this problem?3rd January 2006 at 08:08 #43582saurabh shuklaGuest
can u elaborate abt. inter Bts handoff’s3rd January 2006 at 14:31 #43583TagGuest
In order to prevent drop call there are basically too much to said….
One of the most ideal way/basic way is to plan ur frequency correctly.
Also some pareameters will also affect the performance.
Hope that give u some idea..5th January 2006 at 23:10 #43584t28Guest
drop is on which level ?
1 cell/site/LA ???
frequency problem ? no…
better is check neighbour declaration on BSS & NSS level !!!7th January 2006 at 06:54 #43585MadhuGuest
Call drop can be because of many reasons
1)Because of Handover
2)Because of RLT
3)Because of LAPD
4)Because of Transmission
5)Because of Interfernce
6)Because of RX_Quality
7)Because of Bad RF Planning
Madhu7th January 2006 at 11:53 #43586t28Guest
all of ‘your’ resons are ussually linked to BAD frequency planing, but drops between MSC can cause by many other reasons…9th January 2006 at 08:18 #43587MadhuGuest
I have posted this question what will happen if there is a call drop in Inter MSC I have received no answer
So I want give all possible call drops in the radio path in network A open for the person who answers
Madhu11th January 2006 at 23:25 #43588MihaiZGuest
1)The call in B network will be disconnected/releaseased by the B MSC when a certain timer (Txxxx) will expire. So, this call will NOT increment the DropCall counters in B network.
2)No, will be considered a dropped call just in A network.
3)Not sure, probably some sort of “Txxxx timer expired” or “MSC channel release”… maybe…
Hope this is useful to you.16th January 2006 at 01:11 #43589NarenGuest
Answering to Your questions
1)Yes I should be a Normal call on B(MSC).I guess Message on MSC-B would recieve clear from A network.
2)Messages in the BSC– will Vary depending on the Issues.
a) HO fail
b) Bad Dl/UL
c) TCH Drops(Abis/Aif)
……………17th January 2006 at 07:50 #43590nkarimGuest
call drops in a network after TA 4 although RXLEV is very good. And Calls can not be made after TA 4. can any one tell me what may be the cause of this problem??
nkarim18th January 2006 at 19:20 #43591NarenGuest
You mean Call Drops when TA is more than 4?? If So you need to check the TEMS Logs what it says.19th January 2006 at 13:39 #43592VirginGuest
Can Any One tell me what is the effect of changing the RSL Parameter on the network…The BTS used are NOKIA….\
Virgin2nd September 2008 at 18:45 #43593Johnson CrewGuest
Please what can be the cause of TCH drops due to sudden loss. This site is in an urban area. thanks.