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High SDCCH Assignment Failure

AYAT - 9th November 2009  (14:21 GMT)

also i face the same problem very high SDCCH assignmnet failure????? i can not know why

so could you help me

1- why sdcch assignmnet failure

2-how we can reduce it ???

james - 21st October 2009  (07:55 GMT)

Vendor=Alcatel zain

Francis - 19th October 2009  (14:42 GMT)

I am experiencing very high TCH assignment failure on a cell which is located on a hill and I am using ZTE equip. can you please help me on how to solve this problem

HSH - 23rd August 2009  (13:00 GMT)

Hello Rex,
Do not forget that this Parameter (TX_Integer) is working with S parameter that depend on the type of your CCCH Combine type; if you have CCCH combined or not,
any way try and inform us with the result,


Pix - 21st August 2009  (14:04 GMT)

Probably not... but you can try :)

Rex - 21st August 2009  (10:06 GMT)


Rex - 19th August 2009  (18:54 GMT)

the default parameter in our network of param TX_INTEGER is 50. In cells located in mountains with high SDCCH Assignment Failures, if we reduce the value of TX_INTEGER to 32, will that decrease SDCCH Assignment failures?

Pix - 12th August 2009  (13:33 GMT)

Hi James,

What is the value of SD Asg Fail rate ?

at busy hour ?
daily average ?

which vendor are ou working with ?

james - 12th August 2009  (10:29 GMT)

Hi, i have a cell with very HIGH_SDCCH_ASS_FAIL. i have checked on the CDR which is ok below 1%, quality is super, no visible fault on the TRXs and the cell is not a VSAT one. what action can you recommend.

Mani - 29th July 2009  (09:59 GMT)

Thanks Pix & Nk,
let me do check and impelement given information and i will come back to you. i am ZAIN employee working on NSN & Motorola.

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