- This topic has 8 replies, 1 voice, and was last updated 2 years, 4 months ago by sm.
16th September 2017 at 07:01 #70077smGuest
i hve got several complains about inability of Redmi note4 phones to latch with BSNL Nortel / ericsson network whereas it can latch on to ZTE network of BSNL as per input from customers..what may the problem be ??
..i have checked it and found the complain was well founded .17th September 2017 at 18:02 #70078Wallis DudhnathGuest
As it is Nortel I am assuming that this is IS-95, i.e. classic CDMA. Check that the Radio stack of note4 aligns with the Radio Network of Nortel/Ericsson. aligns.
A few rounds of Interworking tests will be required to determine the Root-Case Analysis. Check that the Nortel / Ericsson Radio Network has all of the latest patches deployed.
VBR/ Wallis Dudhnath25th September 2017 at 10:11 #70079smGuest
Mr. Wallis , i am very much thankful for your response..
Here i would like to add some more info..The Redmi Note4 can neither latch to GSM (Nortel) , Nor to GSM/WCDMA (Ericsson)in my area..
Being a novice i did not understand when you said Radio stack of Note4..Do you mean the range of frequencies on which the note4 can operate ?
What functionalities can those patches add to the network ? Should they be deployed in BSC,Media Gateway , GMSC or in IN ?
With thanks in advance25th September 2017 at 21:18 #70080pixGuest
After booting the MS should send a location update, and go through all the security steps to attach to the network.
It would be best to do a trace of those messages (either from MS itself, or from network probes) to understand why the NW is rejecting those MS. You’ll see a reject message with a specific cause of rejection.
Do you have access to such probes ? In E/// you can trace directly from GPEH or CTR.
pix27th September 2017 at 17:35 #70081Wallis DudhnathGuest
Pix has summarised this well.
Several interworking tests along with active traces will help with the Root Cause Analysis.
VBR/ Wallis Dudhnath3rd October 2017 at 08:19 #70082smGuest
Sir Pix and Sir Wallis , at first , thanks a lot for the encouragement in the form of your responses..
“It would be best to do a trace of those messages (either from MS itself, or from network probes)”
Sir i dont have access to the network probes .. how can i check it in the mobile phone ? i dont have access to the MSC/media gateway either ..
Can it be done in Ericsson BSC ? or RNC ? i have access to both , If so, sir can you give some guidance ?3rd October 2017 at 10:25 #70083smGuest
i have access also to Nortel BSC5th October 2017 at 17:54 #70084Wallis DudhnathGuest
Been a long time since I took traces on the required nodes.
You may need to get 2nd line support to help you to activate any specific traces.
VBR/ Wallis Dudhnath15th February 2018 at 09:43 #70085smGuest
Thanks for your response ,Wallis sir