- This topic has 8 replies, 1 voice, and was last updated 10 years, 3 months ago by pix.
23rd December 2010 at 09:08 #65400PQGuest
We are experiencing a lot of mute calls in our ZTE Network. Does anyone know which node and parameters we should look open?
Thank you in adavnce.24th December 2010 at 10:12 #65401sharadGuest
FIrst go for the CIC testing and faulty E125th December 2010 at 16:13 #65402TanujGuest
1)Check if the problem of mute calls is in one BSC or randomly spread.
2)Get CIC Testing and Ater Testing done for the specific BSC.
3)Check the Ater and A-Interface Mapping and check if there is any difference in the mapping in OMCR and Switch.26th December 2010 at 09:32 #65403PQGuest
HI! Tanuj and Sharad,
We checked A -interface but not find any problem, Could there be any problem in air interface?
Thanks in advance.26th December 2010 at 11:22 #65404BobGuest
do you use MGW?This issue can be related to core too.
try to find IP of calls which face with Silence and make sure there are appropriate connectivity between IP of MGW’s. may be you send properly but another MGW can not sent to you, due to Routing problem or faulty board. then Silence happen.in this case usually after some second call will be released.
Also you can controlling ABIS interface by checking BRPB board and A interface with DRTB the tools name is DSP Insight- But I don’t have any practical experience with ZTE.26th December 2010 at 17:01 #65405TanujGuest
first tell me if the problem is random or only in some BSC’s28th December 2010 at 21:57 #65406massiGuest
for mute call i found 2 link with tx& rx reverse7th January 2011 at 19:25 #65407Singh Ajay JayprakashGuest
Dear All !
We are facing a lot of problems related to one way speech….customers complain they have one way speech ..is this any way related to RF..coverage ..or waht can be my diagonistic approach to solve this issue …8th January 2011 at 06:07 #65408pixGuest
it is not due to radio, but to atermux/a interface links misconfig (or a problem even further in the core network).
if it’s ater/a interface problem, you should be able to see poor KPI on the related A interface channel. Look at the network element called “AIC” in NPO.