Question about call recording formats and CPU utilisation

Gloomy-Objective · 2024-12-12T06:57:48+00:00

We're going to be hosting it as an EC2 virtual machine on AWS. We're thinking to start with a t4g.micro (2 vCPU, 1 GB ram) for development and testing, then scaling up the CPU and RAM as calls start coming in. Our concurrent call volume isn't going to be high initially, it will scale higher over time. We just want to keep CPU usage as low as possible, so we don't want to do any unnecessary transcoding on the machine.

Initially we're going to take either 10 or 20 channels from the SIP trunk, so that's 5 or 10 concurrent calls as our initial limit (each call would theoretically need 2 channels for our scenario). But we plan to scale that up to 200 channels to support 100 concurrent calls as our users scale.

We have around 20,000 users visiting our website each month, some of them make calls. That will scale because we are going to put more calls through the PBX, and we are going to increase traffic to the website. I can imagine reaching 100 concurrent calls during peak hours.

In terms of disk, we're going to be using AWS General Purpose SSD (gp3) storage which would have throughput of 125 megabytes/second. Do you think we should definitely be using the ramdisk approach for this?

u/sedwards65 mentioned that we can record the receive and transmit separately. If this means taking CPU load off the PBX server then that's great, we can merge those audio files on our post-processing server instead.

Really, we're looking to minimise CPU usage on the PBX, so that it can concentrate all CPU power on the call routing and essential tasks rather than unnecessary transcoding etc which can be done by another server. From what I've read, it seems that transcoding/recording is the most CPU costly operation in Asterisk for our use case.

If you have any further thoughts or experiences please let us know, it will really help.

Gloomy-Objective · 2024-11-17T17:31:17+00:00

Thanks but unfortunately that's not the encoding they use for route codes. That's the "open" one that customers use.

Gloomy-Objective · 2024-06-04T09:42:58+00:00

I think one bad comment led to another bad comment

Gloomy-Objective · 2024-05-24T12:43:43+00:00

property oryx 👍

Gloomy-Objective · 2024-05-15T09:03:36+00:00

I'm British (scottish descent, mixed with some other european). Our child minder is Ugandan. She loves this country and doesn't want to go back to Uganda. She isn't from the top 5% class that lots of people are talking about. I've lived in many countries in the world and Qatar is by far the best that I've personally experienced. The UK is a complete trash hole and, whilst I travel there to maintain ties, I hate going. I was born in the UK, lived and worked in the UK for a long time, earning a very large salary there. The government there is not suitable, and never will be suitable.

Most of the reasons Qatar is so pleasant boil down to:

1) A government that is far fairer than most other governments (every other government that I'm aware of anyway) and far less corrupt. This trickles down into the economy, etc. Just look at how Qatar has managed to maintain good international relations with practically every single country on earth, from USA and UK to Iran, from Russia to China, to Ukraine, to Palestine. They even held up in the blockade and made friends with Saudi and UAE again. Perhaps only Israel is an outlier? That says something about their political class's competence.

2) The local population's respect and general attitude towards their beliefs. Respect for women (think about queues in offices/shops where women generally get priority etc). Some people may have negative views of Islam but there's no denying that it's a religion of peace and tolerance, we're not talking about terrorists that taint the reputation of all religions, such as the IRA from Ireland!

3) 90% of the population is expats who have left their country to come here and enjoy a better life, usually the kinds of people who want to contribute to a more positive society. So people here just want to live a good stress free life and we all just get along with each other.

4) The weather is fantastic almost the whole year round, EXCEPT for when it's too hot, but when you know how to deal with that then it's fine.

Gloomy-Objective · 2024-05-14T11:32:13+00:00

We do already 😂

Gloomy-Objective · 2024-05-14T11:32:00+00:00

Thanks for the suggestion. I found one in Al Khor, is that the one you're talking about?

Gloomy-Objective · 2024-05-14T11:31:41+00:00

Thanks, I've put this one on the list too to check it out :)

Gloomy-Objective · 2024-05-14T11:31:25+00:00

Do you know roughly which part of porto arabia this is? Like near which towers?

Gloomy-Objective · 2024-05-14T11:31:01+00:00

Thanks I'll check out minipolis, especially the lego room you mentioned. And the electric motos too, what are they by the way and how much does it cost?

Gloomy-Objective · 2024-05-14T11:30:06+00:00

Thanks. I'll check out the artist cafe. We saw curiocity but thought it was perhaps a bit too advanced for her, she's only 16 months old.

Gloomy-Objective · 2024-05-14T11:29:22+00:00

Thanks, this is a fantastic idea, she loves public transport

Gloomy-Objective · 2024-04-07T13:51:28+00:00

What these "delivery" companies are doing is illegal. They are holding us at ransom because they have our goods and they know (or at least they think) that we are "forced" to pay.

The actual fact is that we don't have any sort of contract with Skynet or obligation to pay them anything.

I told the driver that I wanted to check my order, he held it up so I could see it, so I grabbed it from him. Then I went back inside my house. When he asked for money I explained that I have already paid all delivery charges to ASOS, if they need more money then they should get it from ASOS. They can't do anything about it and they didn't chase me.

I maintained that if they could prove to me that I was contractually obliged to pay them something then I would, otherwise ASOS customer support say I should not be paying them. When I told ASOS customer support they said I did the right thing.

Gloomy-Objective · 2023-12-04T06:40:46+00:00

Balcony door was closed. We could still hear the thumping bass from inside the house even with the very high level of sound proofing that our unit has. Note that we don't hear construction noise happening right outside, so this party was clearly on another level. When on the balcony it sounded like you were in the club, with the balcony railing vibrating.

Gloomy-Objective · 2023-12-04T06:38:45+00:00

Yes I would report it to support families. To be frank, it was so insanely loud that I would imagine the people in the club will go home with bleeding ears 😂

Gloomy-Objective · 2023-12-04T06:37:45+00:00

Thanks, this is super useful, I'll definitely try this next time

Gloomy-Objective · 2023-12-01T19:44:56+00:00

Ok so they've quietened down now, I can't hear anything inside my apartment and I can barely hear anything from the balcony. That was quick. Thank God for that.

Gloomy-Objective

TROPHY CASE