many of the channels are not occupied in asterisk with sangoma - asterisk

I am using 4 port and 2 port sangoma card with direct PRI (ISDN) . Only first few channels are occupying for incoming calls. Please find the below sample report for fifth PRI,
ChannelNo Calls
125 1273
126 607
127 292
128 110
129 34
130 11
131 2
>
rest of the channels are not receiving the calls (132 to 155).
Is this issue is really belongs to service provider..? Please suggest..

Pri card is digital card. So all channels usually(unless specialy configured) belong to one span(logical channel).
As you can see from your output, you have more calls on lower channel numbers. That just mean your provider not use round-robin calling but just calling first availible channel. That is ok, nothing to do with that.
That just mean you never use more then 131 concurrent channel.

Related

What is the range of id for open groups (not the channel) in Telegram?

Created an open group whose id is -1001492565750, somewhere I read that -100 is the id of the group entity, real id is 1 492 565 750, maybe someone knows the exact range, decided to check the id of its various groups and I got about 1 340 000 000 to 1 590 000 000.
Telegram ID's can be bigger than 2^31 - 1.
(2.147.483.647)
From the Telegram Bot API 5.1 Change log:
March 9, 2021
⚠️ WARNING! ⚠️
After one of the upcoming Bot API updates, some user identifiers will become bigger than 2^31 - 1 and it will be no longer possible to store them in a signed 32-bit integer type. User identifiers will have up to 52 significant bits, so a 64-bit integer or double-precision float type would still be safe for storing them.
Please make sure that your code can correctly handle such user identifiers.

Why MPEG-2 Encoder decreases fast in Mbit/s

I'm trying to understand how the MPEG-2 works, so I can finish a project which is based on it. First of all I want to understand the MPEG-2. I want to know why the total Mbit/s decreased very fast between 1995 and 2005? It went from 6 Mbit/s to 2 Mbit/s. How was this possible?

How many PE (Parsing Engine) can be configured in a Teradata Box

Lets say, for a system with 8 nodes and 368 AMPS, what is the number of PE that be configured? And How many sessions can each PE can handle (The default is 120)
Max 10 PEs per node are permissible, but better is to add 2 PE per node (it will give you optimal performance).
1 PE supports 128 sessions where 8 are reserved for internal use. SO 128-8 = 120 sessions per PE is usable by users.

The magic number of OpenCl registers

I wrote two different openCl kernels, used the nvidia profiler to get some information on them and found that both were using 63 registers per work-item.
I tried everything I could think of to lower this number (replace int with ushort, tried to declare variables inside {} to show the compiler when it could get rid of them) but it seems impossible to have this 63 changed!
Then I found another question about a kernel he wrote that uses...again 63 registers.
Of course this could be pure coincidence, but maybe there is a reason behind...a specific function used, a hardware limitation? Does anyone know?
63 registers is the max. amount on most of the recent hardware like GTX 480 up to GTX 770. Only with a GTX 780 or Tesla K20 you get 255 registers per thread.
So when your kernel uses 63 registers it is most likely using more than 63 but they will be spilled to off-chip private memory (aka CUDA local memory). For example if your nvidia profiler reports 128bytes of local memory it means you need to get rid of 32 (spilled) registers before you can get below 63 hardware registers.
BTW: "8,192 32-bit registers per multiprocessor" means 8,192 registers for all the workgroups that are resident on the multiprocessor. But usually the number of workgroups is bound by the size of your workgroups and the number of registers your kernel needs. So for example if your kernel uses 63 registers and you have a workgroup size of 16^2 you get: 63*16^2 = 16128 registers per workgroup. Let's assume you have 64K registers per multiprocessor, then you can have 4 workgroups resident on each multiprocessor which would yield an occupancy of 25%.
The max. number of registers/thread is limited by hw and it depends on the 'compute capability' of the device. Take a look at the table
Compute Capabilities.
(This applies to NVidia, other vendors might have other limits).

Jump call from one dahdi channel to other

Hi I will describe as best I can.
I am using Asterisk 1.4 with DAHDI 2.4. We have merged two PRI lines i.e now we have 60 lines on one span.
I want to jump call from one channel to other, i.e. I call is received on channel no. 3 of dahdi then I want to switch this call to channel number 32 i.e. on the second number(not for all, only for some specific cases).
I use Dial(DAHDI/G1) to dial the free channel available from last, but it does not work
You can create 2 groups and dial to dahdi/g2.
See default chan_dahdi.conf.sample for examples.
You also able put some channels to more then 1 groups(for example to group 0 all and to group1 only pri span 1)

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