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dfullertasterisk at sh...
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 Posted: Wed Jan 16, 2008 10:30 am Post subject: [asterisk-users] Digium Part#'s (Was: Difference between TE1 |
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Igor A. Goncharovsky wrote:
| Quote: | Hello!
Guilherme Loch Waltrick G?es wrote:
| Quote: | What's the difference between the TE121 and TE122. I read the description on
Digium's site and it isn't clear to me.
Best regards,
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The only one difference is interface: one of them have PCI and other
have PCI-Express.
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Here's my rant for the day:
The one thing that's bugged me about Digium's model numbers is the
difficulty in determining features just by looking at them. The one
thing that is easy to tell is the maximum number of ports/channels the
card will take. From there it gets harder. Analog is either TDM* or
AEX*. PCI or PCI express can sort of be determined by whether it ends
with a P except on the TE122?. Whether hardware echo cancellation is
built-in, available or not present can sort of be determined for digital
cards if it ends in 2 or 7 except on one port models. PCI card voltage?
Again, sometimes you can use the last digit but not on one port models.
If you want to know what a card's capabilities are you're better off
just memorizing each part number. Maybe there's a scheme I'm just not
capable of understanding here.
Rant off.
-Dave |
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kpfleming at digium.com
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| Posted: Wed Jan 16, 2008 2:04 pm Post subject: [asterisk-users] Digium Part#'s (Was: Difference between TE1 |
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Dave Fullerton wrote:
| Quote: | If you want to know what a card's capabilities are you're better off
just memorizing each part number. Maybe there's a scheme I'm just not
capable of understanding here.
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We gave up (intentionally) on trying to have model numbers that
reflected all the capabilities of each card, because they would turn
into unintelligible (and unmemorizable) part numbers. We now have 'part
numbers' that represent a given card with the options it was ordered
with (analog module(s), echo canceler, etc.), and we've stopped trying
to use suffixes to indicate bus type and instead just use a different
model number.
This why the TE122 (which replaced the TE120P) no longer has a 'P'
suffix; the PCI-Express version is a different model number entirely.
With that said, for some reason our marketing department decided to
change the *prefix* for PCI-Express analog cards from TDM to AEX, but
they still follow the rest of the model naming scheme (no suffix letter
and no different model numbers that indicate included optional modules).
--
Kevin P. Fleming
Director of Software Technologies
Digium, Inc. - "The Genuine Asterisk Experience" (TM) |
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