Silent calls

[justdream]

Dears,

Do you hve document about CIC test?
It's not good to ask MSC guys doing CIC test while I'm not aware about it

Kindly share document if you have, thanks a lot

[scorpiobgd]

Before any testing you must do printout of cic-s on bsc and msc guys must do same on msc ...
here is sample printout on msc...

CIRCUIT(S)

TERMID ORD CTRL HGR STATE CIC UNIT

1270-1 1 Y 1-1 WO-EX 1 SIGU, 7
1270-2 2 X 1-2 WO-EX 2 SIGU, 7
1270-3 3 Y 1-3 WO-EX 3 SIGU, 7
1270-4 4 X 1-4 WO-EX 4 SIGU, 7
1270-5 5 Y 1-5 WO-EX 5 SIGU, 7
1270-6 6 X 1-6 WO-EX 6 SIGU, 7
1270-7 7 Y 1-7 WO-EX 7 SIGU, 7
1270-8 8 X 1-8 WO-EX 8 SIGU, 7
1270-9 9 Y 1-9 WO-EX 9 SIGU, 7
1270-10 10 X 1-10 WO-EX 10 SIGU, 7
1270-11 11 Y 1-11 WO-EX 11 SIGU, 7
1270-12 12 X 1-12 WO-EX 12 SIGU, 7
1270-13 13 Y 1-13 WO-EX 13 SIGU, 7
1270-14 14 X 1-14 WO-EX 14 SIGU, 7
1270-15 15 Y 1-15 WO-EX 15 SIGU, 7
1270-16 16 X 1-16 WO-EX 16 SIGU, 7
1270-17 17 Y 1-17 WO-EX 17 SIGU, 7
1270-18 18 X 1-18 WO-EX 18 SIGU, 7
1270-19 19 Y 1-19 WO-EX 19 SIGU, 7
1270-20 20 X 1-20 WO-EX 20 SIGU, 7
1270-21 21 Y 1-21 WO-EX 21 SIGU, 7
1270-22 22 X 1-22 WO-EX 22 SIGU, 7
1270-23 23 Y 1-23 WO-EX 23 SIGU, 7
1270-24 24 X 1-24 WO-EX 24 SIGU, 7
1270-25 25 Y 1-25 WO-EX 25 SIGU, 7
1270-26 26 X 1-26 WO-EX 26 SIGU, 7
1270-27 27 Y 1-27 WO-EX 27 SIGU, 7
1270-28 28 X 1-28 WO-EX 28 SIGU, 7
1270-29 29 Y 1-29 WO-EX 29 SIGU, 7
1270-30 30 X 1-30 WO-EX 30 SIGU, 7
1270-31 31 Y 1-31 WO-EX 31 SIGU, 7
1313-1 32 Y 1-32 WO-EX 65 SIGU, 8
1313-2 33 X 1-33 WO-EX 66 SIGU, 8
1313-3 34 Y 1-34 WO-EX 67 SIGU, 8
1313-4 35 X 1-35 WO-EX 68 SIGU, 8
1313-5 36 Y 1-36 WO-EX 69 SIGU, 8
1313-6 37 X 1-37 WO-EX 70 SIGU, 8
1313-7 38 Y 1-38 WO-EX 71 SIGU, 8
1313-8 39 X 1-39 WO-EX 72 SIGU, 8
1313-9 40 Y 1-40 WO-EX 73 SIGU, 8
1313-10 41 X 1-41 WO-EX 74 SIGU, 8
1313-11 42 Y 1-42 WO-EX 75 SIGU, 8
1313-12 43 X 1-43 WO-EX 76 SIGU, 8
1313-13 44 Y 1-44 WO-EX 77 SIGU, 8
1313-14 45 X 1-45 WO-EX 78 SIGU, 8
1313-15 46 Y 1-46 WO-EX 79 SIGU, 8
1313-16 47 X 1-47 WO-EX 80 SIGU, 8
1313-17 48 Y 1-48 WO-EX 81 SIGU, 8
1313-18 49 X 1-49 WO-EX 82 SIGU, 8
1313-19 50 Y 1-50 WO-EX 83 SIGU, 8
1313-20 51 X 1-51 WO-EX 84 SIGU, 8
1313-21 52 Y 1-52 WO-EX 85 SIGU, 8
1313-22 53 X 1-53 WO-EX 86 SIGU, 8
1313-23 54 Y 1-54 WO-EX 87 SIGU, 8
1313-24 55 X 1-55 WO-EX 88 SIGU, 8
1313-25 56 Y 1-56 WO-EX 89 SIGU, 8
1313-26 57 X 1-57 WO-EX 90 SIGU, 8
1313-27 58 Y 1-58 WO-EX 91 SIGU, 8
1313-28 59 X 1-59 WO-EX 92 SIGU, 8
1313-29 60 Y 1-60 WO-EX 93 SIGU, 8
1313-30 61 X 1-61 WO-EX 94 SIGU, 8
1313-31 62 Y 1-62 WO-EX 95 SIGU, 8

COMMAND EXECUTED

[zhanglw268]

For Huawei:
1. use "DSP ACIC" to check the CICs status;
2. use "CHK E1T1CRS" to see whether you have cross-wired E1s, please note that this is a service affecting comand when you run on the live network.

Zhanglw268

[justdream]

For Huawei:
1. use "DSP ACIC" to check the CICs status;
2. use "CHK E1T1CRS" to see whether you have cross-wired E1s, please note that this is a service affecting comand when you run on the live network.

Zhanglw268

Dea please explain in details how to perform..
I'm too much interested in learning how to perform it
Thanks

[scorpiobgd]

usefull... thanks.... huawei has a very simple and intuitive commands...

[orcun_laing]

Experts,

I face a problem of getting silent calls from both parties (I mean both the caller and the calling person couldn't hear each other)

Do you know what's the root cause of this problem and how to solve it?

as I face it frequently
My network is 2G

Hi,

If your network has never had problem before and problem just started, I would recommend to check alarm history of your voice coding/decoding board. I'm not sure about the board name as it varies for different vendors. Sometime, higher CPU load of the voice coding/decoding board also can cause such problem. If your hardware board is not working properly, calls will become silent after few seconds or minutes talking or silent at first answer straightaway. You should check every aspect of the board to confirm it's not hardware that causes silent calls.

BR///

[aslsh21]

Experts,

I face a problem of getting silent calls from both parties (I mean both the caller and the calling person couldn't hear each other)

Do you know what's the root cause of this problem and how to solve it?

as I face it frequently
My network is 2G

the probelm may be :
1- faulty DRI ( HW )
2- bad FREQ ( Change the ARFCN to another one )

[auspicious]

Hi

It can be a case of "CIC Mismatch " (Non - alignement of PCM's on A Interface ) .
Do the CIC Mismatch testing in coordination with Core Guys.

1. Do this activity during Downtime (In night) .
2.Block all the PCM's towards MSS except one and do call testing .
3. Repeat this for all PCM's.
4. The PCM's were you get mute calls are either wrongly mapped 9configuration wise) or wrongly patched at the DDF side.

Br//
Auspicious

[arjaypanganiban]

Hello Justdream,

I assume that your core network is Huawei and also your RAN since you encounter this most of the time. Please fill in the details below so we could isolate your problem later.

What type of transport do you use for A - Interface? Is it E1 or STM1?
Have you checked the mapping of TID assignments both for MSS and MGW?
Have you verified the CIC status both for NSS and BSS side?

[justdream]

Dears,

Are there any row counters could be used as an indicators of cells suffers from Silent calls?