[asterisk-users] Learn some terminalogy before mountingthistask.

Wed Aug 8 13:07:08 CDT 2007

SLA is not BLF.
The only thing you need to configure to have BLF is adding hint priority to
your dial plan.

On 8/8/07, James Collier <james.collier at xtratelecom.es> wrote:
>
> Flash Operator Panel would do it.
>
> Also the Aastra 55i phones with the expansion module, which has 36 lines
> on
> it should work, but you will need to cofigure your Asterisk for Shared
> Line
> Appearances (also called Bridged Line Appearance) for the Busy Lamp Field
> (BLF) to work.  The Aastra 55i would show you if they are talking or not.
>
>
>
>
> -----Mensaje original-----
> De: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com]En nombre de James R.
> Stevens
> Enviado el: lunes, 06 de agosto de 2007 5:39
> Para: Asterisk Users Mailing List - Non-Commercial Discussion
> Asunto: Re: [asterisk-users] Learn some terminalogy before
> mountingthistask.
>
>
> All,
>
> In the design of an Asterisk system using Cisco 7900 series SIP phones
> we are struggling with giving the reception folks (3) hardware that can
> tell them the status of everyone in the office (10 or so) (On the phone,
> out of office etc) Something that would register each of the extensions
> we choose and give status of that ext.
>
> What hardware (Phone or other) could we give the receptionist to do
> this?
>
>
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Jerry
> Jones
> Sent: Monday, July 02, 2007 4:53 PM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [asterisk-users] Learn some terminalogy before mounting
> thistask.
>
>
> On Jul 2, 2007, at 4:31 PM, James R. Stevens wrote:
>
> > All,
> >
> > It's been some time since this thread was alive but we are now seeing
> > some progress in this project. Which I will document.
> > We have ordered a T1 for the new building which we are moving (We are
> > getting 14 channels of the T1.) and have a Sangoma A101 card for a 3U
> > rack server.
> > The T1 will have B8ZF decoding and ESF framing  which the sangoma card
> > should handle.
> >
> > They asked me if we want NI1 or NI2 ?? Is this a reference to the
> > PRI ?
> Yes. You want NI2.
>
>
> >
> > -----Original Message-----
> > From: asterisk-users-bounces at lists.digium.com
> > [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Pierre
> > Marceau
> > Sent: Tuesday, April 10, 2007 11:25 PM
> > To: asterisk-users at lists.digium.com
> > Subject: Re: [asterisk-users] Learn some terminalogy before mounting
> > this task.
> >
> > James,
> >
> > I'm sorry that I can't add anything but just wanted you to know that I
> > am watching this thread with great interest and suspect that many
> > others
> > will too.
> >
> > Thanks in advance for posting lots of details as you go thru the
> > process.
> >
> > Pierre
> >
> >
> >>>> abalashov at evaristesys.com 4/10/2007 10:41:36 PM >>>
> >
> > Hi James,
> >
> >    Admittedly, the terminological and conceptual barrier may present
> > some
> > impediments to the completeness and specificity of answers, so we
> > might
> > have to work at this a bit, but let's see how we can help:
> >
> > On Tue, 10 Apr 2007, James R. Stevens said something to this effect:
> >
> >> We have a T1 coming into the building(FYI-Our Voice and Data are on
> >> separate T's) terminating at the Smart Jack.
> >
> >    Are you implying that there are two T1 circuits -- one voice,
> > and one
> >
> > data?  Or do you mean that the T1 is channelised and some of the
> > channels
> > are used for voice and some for data?  That's kind of what it sounds
> > like.
> > Sounds like you can do 7 calls on voice channels and the rest are
> > provisioned as a clear-channel data pipe.
> >
> >    That would mean that you have some equipment for breaking them
> > out on
> >
> > your premises.  The channel bank would break out the voice lines as
> > FXO
> > analogue lines (if you set it to) and those probably feed into your
> > PBX.
> >
> > The rest of the channels used for data would probably be signaled
> > out on
> > another T1 interface, but with some subrate DS0 channels missing.
> > That's
> > ust a guess.
> >
> >    But what you say below suggests that my theory is wrong, so perhaps
> > it is
> > the case that you have separate voice and data T1s after all, even
> > though
> > you refer to it in the singular.
> >
> >    Do be aware that under no circumstances does anyone generally refer
> > to a
> > T1 as a "T."  :)
> >
> >> I can tell you our current phone system can handle 7 phone calls at a
> >> time:
> >>
> >>   Does this mean the T only has 7 channels provisioned out of the 24
> >> possible?
> >
> >    This is possible.  Do you happen to know what kind of signaling is
> > used
> > on it?  Is it an ISDN PRI, or an E&M trunk?
> >
> >>  Does a channel (In terms of the T1) = a port?
> >
> >    A port on what?  The channel bank?
> >
> >    Channel banks generally do break the DS0s (subrate 64 kbps
> > channels,
> > of
> > which there are 24 on a T1) out, but some more sophisticated ones have
> > the
> > capability to do other things as well.
> >
> >    If so, the answer is yes.
> >
> >>  How many phone calls can one TDM400 support concurrently? (four ??)
> >
> >    If it has four FXO ports and four FXO modules, yes.  They come in
> > different combinations.  Some come with 2 FXO (outside POTS lines
> > to CO)
> >
> > and 2 FXS (plain analogue POTS handsets) ports, etc.
> >
> >>  Would I be better off getting a Zapata T1 card and forgetting the
> >> Channel bank all together(Use the digital signal)?
> >
> >    You could do that.  Personally, the easiest approach I would say
> > would be
> > to order a PRI.  They've probably considerably gone down in prices,
> > too,
> >
> > especially if you go shopping with some friendly CLECs.  The rule of
> > thumb
> > in the industry is that generally, once you pass the threshold of
> > six or
> >
> > seven POTS lines, it becomes economical to just order an entire
> > PRI, and
> >
> > once you do that, there usually aren't *very* considerable savings
> > to be
> >
> > gained from turning down all but a few channels.  A PRI has 23
> > channels
> > (bearer channels ("B channels")) and one signaling channel ("D
> > channel");
> > it's a type of T1-based ISDN interface.
> >
> >    So, you might potentially be able to get 23 in/outbound phone lines
> > for
> > roughly the same cost or a modest increase, which would increase your
> > organisation's capacity to do things like conference calling and other
> > things which tie up large amounts of outside lines.
> >
> >    Do beware that if you go this route, PRIs can be ordered as
> > "inward-only"
> > (typically used for modem and termination-only telephony applications
> > like
> > voicemail, IVR, conferencing, etc.) or bidirectionally.
> >
> >> If we go with a Zapata T1 card for the Asterisk server would we be
> > able
> >> to provision an analog phone line, for say a FAX machine from it?
> >
> >    No, not if the card doesn't have FXS ports on it.  But you could
> > get
> > another Digium or Digiumlike card that does, even if it's just a
> > single-port (like the hugely popular X100P, which is very inexpensive)
> > and pull that off.
> >
> >    Let me know what else we can answer, or if I substantially
> > misunderstood
> > your question.
> >
> > Good luck,
> >
> > -- Alex
> >
> > --
> > Alex Balashov <sasha at presidium.org>
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