Roy,
True that, but all hardware modules in a BSC are totally redundant (either 1+1 or N+1 redundancy scheme) including the PCM interface boards, providing an automatic failover switch capability. This is true for all serious GSM equipment vendors. So the services dependent on these modules shouldn't be down that long especially for a big GSM provider like Zain and in locations like the CBD where the number of subscribers is humongous. 
This is all based on a lot of theory and a little bit of observation so my conjecture is open to correction.

On Tue, Oct 6, 2009 at 9:15 AM, Roy Michoma <roymichoma@gmail.com> wrote:
u cant have redundant BSC's


On Tue, Oct 6, 2009 at 8:51 AM, Alvin Jason Ochieng <ajochola@gmail.com> wrote:
My line is also down & i have no bills pending !!! NKT !!!!


On 10/6/09, nick muttai <nmuttai@gmail.com> wrote:
A reliable source tells me that one of their their ADMs "died" Any Zain guy to confirm this?And how comes they  do not have redundancy on key BSC components and services?

On Tue, Oct 6, 2009 at 8:21 AM, Jared Koyier <jaredkoyier@gmail.com> wrote:
SOLOMON....Surely do you think ZAIN anticipated an outtage at peak hrs
and let it take course? Most technical faults are never seen apriori
and it is unrealistic for a customer to be warned beforehand unless it
is a scheduled maintenance. Dont fry zain,they lost more biz than
majority of their subscibers due to that outtage.

On 06/10/2009, Steve Muchai <smuchai@gmail.com> wrote:
> On Tue, Oct 6, 2009 at 7:55 AM, Solomon Mburu <solo.mburu@gmail.com> wrote:
>> One strange thing, though, they didn't inform the consumers of an
>> impending outage.
>
> there was never an "impending" outage, it was an unexpected outage.
> They did send out an apology, thus acknowledging the incident, though,
> which I think is a good thing.
>
> BR,
> S
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