The number you have called is out of coverage

[justdream]

Dear Experts,

what could a cause of hearing Auto message says "The number you have called is out of coverage"
when you called someone in your mobile network while both MS & BTS are working properly...

[aminkhan]

this problem releated to paging ,

[justdream]

this problem releated to paging ,

so how to solve it..by the way, I've found BS_AG_BLKS_RES set to ZeroWhat does it mean?

[hamody2005]

If we consider Ms is working properly, There are many reasons:-
-Ms (already) is out of coverage area.
-high Paging Channel Load (reaching congestion) on cell covering that user.
-Ms doing registration (Ms located in LAC boundary area) at the time of paging.
-MSC configuration problems(like wrong cell configuration).

[hamody2005]

The solution for such a problem is:-
- adding new sites to provide coverage for bad coverage area.
- Reduce Paging Channel Load.
- Optimize LAC boundary Area.
- Cell configuration in BSC and MSC must be consistant.

[justdream]

If we consider Ms is working properly, There are many reasons:-

-high Paging Channel Load (reaching congestion) on cell covering that user.
-Ms doing registration (Ms located in LAC boundary area) at the time of paging.

Please how to calculate Paging load for particular cell?
and how to reduce/ optimize it..

[hamody2005]

Please how to calculate Paging load for particular cell?
and how to reduce/ optimize it..

You must consider I'm sharing with you my Experience in CDMA Optimization
we can get Paging Channel Load from statistics (Like M2000: Huawei, CNO2: ZTE).

-if you want to calculate the Load theoretically see attached file.
-if you want deep understand for paging optimization see attached file.


-
-Check if the load is coming from (call or SMS ).
-If the cause is SMS try to move it to traffic.
- Enable GPM combination.
-Remove unneeded NBR LAC (of the wanted LAC) in MSC side.
-Try to reduce high registration on some sites.

If all of these didn't work or already done, ADD Another Paging Channel.



Read the docs carefully it's very good material.

[justdream]

If we consider Ms is working properly, There are many reasons:--Ms doing registration (Ms located in LAC boundary area) at the time of paging.

Dear which 2G Radio parameters could be modified to solve this issue?

[hamody2005]

Dear which 2G Radio parameters could be modified to solve this issue?

As I said If your system is CDMA just read the docs in attachement.

[Handover24]

check sdcch and utrng if they are ok you must consider to plan again the location area ( according to MSC dimensioning ) this is the best way to solve paging problems problems.