We know that there are a lot of alternatives out there that can measure up to Digium's releases of Asterisk cards. Why Digium charges so much with their cards are beyond me, when for the same functionality and the same quality, customers can avail of alternatives for a relatively lower cost. Quality asterisk hardware need not be expensive.
Question is where? Where do we look for such alternatives?
First, are you even open? Being in the open source community, you should be. Techies have a mindset that whatever gear they're after, it has got to be good. But in order to be good, you have got to be established. Digium's done that. And now they charge their cards at rates they can dictate and control. Again, are you open?
If you are, here is a list of known good Asterisk cards that offer the same functionality as their Digium cards:
* Zapmicro * Yeastar * Rhino * Sangoma
Those are the ones in my list so far.
Zapmicro offers a pin-to-pin compatibility with their Digium counterparts. Meaning if you have a Digium card already and would like to expand it with either FXS or FXO modules, you can buy Zapmicro's modules and have absolutely no problem making it work with your Digium card. This works vice versa. If you have a Zapmicro base card and would like to expand it by using modules, you can use your Digium made modules as well.
Standard drivers for Zapmicro's 4-port card, the ZMA400P, can be used with asterisk. Non-standard cards such as the 8 port version, ZMA800P, requires a driver download so you can make it work with Asterisk. It is a guaranteed working driver.
Yeastar's Asterisk cards are uniquely done for their own. The Yeastar TDM800 base card sports an 8-port capable card but only has 4-ports physically present. What do I mean? See, their modules come in pairs. You have physically one module, but within are 2 modules. So they have a module with 2 FXS in it, 2 FXO's, and 1 FXO / 1 FXS pair with it. So there are combinations available as well. For starters, here are the module models:
Don't get lost, it's pretty simple. If you want a 5 FXO card and 3 FXS card, use this config: 1 TDM800P base card + 2 O2's + 1 S2 + 1 SO. Got it? You should. Yeastar cards are not pin-to-pin compatible with Digium and you would need to download their driver from their website in order for it to work with Asterisk as well.
Rhino asterisk cards are also for Rhino modules. They sport their own hardware for echo cancellation, which is very important for VoIP applications. Echo cancellation basically is a method of removing noises caused by IP traffic and other factors that are involved in a VoIP telephony transaction. Texas Instruments make their echo cancellation chipsets. Rhino manufactures both analog and digital cards, as well as industry scale channel banks (a lot of FXS or FXO found inside an external box!).
Lastly, Sangoma cards are known to be expensive but reliable. Not that the other cards aren't, but they sure give that impression with their "Because it must work" tagline. Sangoma is an established engineering firm and have designed their cards to be justified with the reputation the company has. If you've got the budget, go!
Now, where do you buy these?
There are plenty of online stores that you can choose from when purchasing VoIP hardware. I've found one interesting though. PBXEQ.com. Unlike any other hardware store, the site gives a customer focused appeal, instead of the usual "Get the hardware you need and leave" kind of thing. The site also features live chat where you would have to simply click and you get a customer representative on the other end who is knowledgeable with the hardware they are selling. The site also features other VoIP products such as IP phones, gateways, Analog Telephone Adapters, and the like.
Most people know what stealing is. If you went into a clothes shop and came out the door later with a shirt or a blouse that you hadn't paid for, that might seem like stealing. Trouble is, in a recent survey, about half the British residents interviewed admitted to taking something at some time from their place of work. It might have been the odd ballpoint pen, or a handful of paper-clips, but it went up to and included a laptop computer. What about the worker in a car factory who took home a small part every day. At the end of the year he had been able to build his own vehicle at home. Is that theft? Or do we secretly admire his initiative?
What about taxes? In another survey half the respondents admitted to playing down their income and beefing up their expenses when they made their annual Tax Return. That's lying, but hey, you're only stealing from the taxman, right? Well no, you're actually taking from all of us, all those daft enough ? or honest enough ? to pay the taxes we owe and thus cover all the healthcare costs and social work that we happen to think is a useful part of our society. It's not like finding a banknote on the street, is it? If we saw some money sliding down the gutter, well, that's just good luck, isn't it? It isn't like we filled in any forms falsely or lied to anyone, if we just pick it up and run off with it, right? No? What about if you happened to be walking past my office and saw my wallet lying open on my desk? Would you feel justified in helping yourself to whatever you could find in there? I mean, it would involve strolling into the room casually and hoping that no one was there. Or that anyone else passing by noticed you being in there and thought you were acting suspiciously. And you would have to open the wallet and riffle through the private contents. That's stealing, right? Or would you say it was all my fault for being so stupid as to leave my assets unattended in plain sight?
After all, people like 'finding' free things. A few nights ago, someone climbed up onto the roof of the Youth Centre near where I live and 'found' some strips of lead. They helped themselves and later that night, when it rained, water poured in through the open rafters and wrecked the computer room and boxing gym. It's all bad news for the local children, losing facilities that they sorely need, but it's not stealing is it? I'm sure the local thugs who did the deed will be excusing themselves right now and saying that 'It's insured' or some such nonsense, and not worrying about the fact that it's their younger brothers and sisters who are losing the facilities, however temporarily.
This 'insurance' issue raises the question: 'Who pays?' If it's the taxman we don't worry, it seems. Or maybe if it's big corporations (especially if they are our employers), department stores, local government, the banks, insurance companies, that's OK. But the clear fact is that someone does pay, somewhere, at some point. I've got a friend who was telling me proudly that he's discovered a wonderful new hair salon where they serve free drinks while you get your hair cut. Tea, coffee, fruit juice, or mineral water, it's your choice. I said: who pays? He laughed. 'It's free', he said. Then I found out how much he paid for his coiffure, and it was double the bill I usually pay. Who paid? He did.
Now we get to the internet. For some reason, an incredible number of people expect it to be free. Why? Every email you send, every web site you visit, has been set up, programmed and built by people. Their time costs money. You expect them to work for nothing? The unusual thing about the web is that it mostly isn't 'big business'. Apart from the obvious software giants, it's mainly people in garages and bedrooms, home dens and studies. Some of them are geeks, some hobbyists. Some happy to invent new stuff, work on new ideas, and give them out to the world (which is what Open Source software is all about). But if someone has spent time making something work, and you then take it for free, aren't you stealing? If it's their effort, then you've taken their energy, their resources, their inventiveness, their time. For nothing.
Ahh yes, someone pays, you agree, but it's advertising. Web sites are flooded with small ads and links to commercial programs, so that's what's funding the work, you say. But who pays for ads? When I buy my tin of baked beans in my local supermarket, I know that that company has spent millions on TV ads. It means that for the price I pay, some small fraction of it is going towards the company's advertising budget. If I buy books or toys or software on the internet, isn't some small part of the price helping to pay for advertising it? After all, who paid for my friend's 'free' cup of coffee? He did.
If you think anything is free from the internet, you're deluding yourself, firstly. But secondly, and far worse, is the attitude that says, 'Yeah, someone pays, but it isn't going to be me'. Because that's stealing, (just like taking from the taxman, or your employer, or my local Youth Centre). You want a program that will make you money, but you aren't willing to pay for it? You want someone to teach you internet marketing, as long as nothing has to come out of your wallet? That's a hell of a bad basis for starting to set up any kind of successful enterprise. That's like going into the shop and seeing 'Aunty Betty's Cake Mix' and thinking, 'Okay, she invented the recipe and prepared the ingredients, but what do you mean ? she isn't going to cook it for me, for free?' Or, just to rub the point in, she isn't going to bake it in her oven and leave her front door open, so you can sneak in and steal the cake out of her oven, in her own house. She isn't? She isn't going to let you steal it from her and pay nothing? What kind of internet author is she?
Both Johnnyvoip & Mike Scantlebury are contributors for EditorialToday. The above articles have been edited for relevancy and timeliness. All write-ups, reviews, tips and guides published by EditorialToday.com and its partners or affiliates are for informational purposes only. They should not be used for any legal or any other type of advice. We do not endorse any author, contributor, writer or article posted by our team.
Johnnyvoip has sinced written about articles on various topics from Internet Marketing. http://www.pbxeq.comhttp://store.pbxeq.com. Johnnyvoip's top article generates over 480 views. to your Favourites.
Mike Scantlebury has sinced written about articles on various topics from Internet Marketing, Writing and After Divorce. Mike Scantlebury is an Internet Author. He currently lives in Manchester, England, home to soccer and The Smiths, where he outputs books, stories and songs, some of which end up at YouTube even. He has several web sites following his many interests, but y. Mike Scantlebury's top article generates over 27100 views. to your Favourites.