Re: [asterisk-users] Learn some terminalogy before mountingthistask.

2007-08-08 Thread James Collier
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: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] 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: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] 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: [EMAIL PROTECTED]
 [mailto:[EMAIL PROTECTED] On Behalf Of Pierre
 Marceau
 Sent: Tuesday, April 10, 2007 11:25 PM
 To: asterisk-users@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


 [EMAIL PROTECTED] 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 EM 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

Re: [asterisk-users] Learn some terminalogy before mountingthistask.

2007-08-08 Thread Al lists
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 [EMAIL PROTECTED] 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: [EMAIL PROTECTED]
 [mailto:[EMAIL PROTECTED] 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: [EMAIL PROTECTED]
 [mailto:[EMAIL PROTECTED] 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: [EMAIL PROTECTED]
  [mailto:[EMAIL PROTECTED] On Behalf Of Pierre
  Marceau
  Sent: Tuesday, April 10, 2007 11:25 PM
  To: asterisk-users@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
 
 
  [EMAIL PROTECTED] 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 EM 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

Re: [asterisk-users] Learn some terminalogy before mountingthistask.

2007-08-06 Thread James Collier
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: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] 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: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] 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: [EMAIL PROTECTED]
 [mailto:[EMAIL PROTECTED] On Behalf Of Pierre
 Marceau
 Sent: Tuesday, April 10, 2007 11:25 PM
 To: asterisk-users@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


 [EMAIL PROTECTED] 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 EM 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

Re: [asterisk-users] Learn some terminalogy before mountingthistask.

2007-08-06 Thread James R. Stevens
Thank you for your reply as it is exactly what we would need. Sorry I
didn't find it myself. I do have a question about configuration within
Asterisk. 

 

I'm reading the PDF on the Cisco Expansion module and it says 'When used
as a DN key buttons are illuminated ...'

 

Is that what we are doing within Asterisk or Trixbox when we configure
an extension?  (A Directory Number??)

 

From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of James
FitzGibbon
Sent: Monday, August 06, 2007 7:37 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Learn some terminalogy before
mountingthistask.

 

On 8/5/07, James R. Stevens [EMAIL PROTECTED] wrote:

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?


You're probably looking for something like this:

http://www.cisco.com/en/US/products/hw/phones/ps379/products_data_sheet0
9186a008008883d.html 

I have no experience integrating this specific piece of hardware with
Asterisk, but I've done what you're trying to do with the Grandstream
equivalent for our front reception:

http://www.grandstream.com/gxp2000.html

and

http://www.grandstream.com/gxp2000ext.html

As I understand it, so long as the device can do a SIP SUBSCRIBE for
each extension you want to monitor and you configure hints in your
Asterisk dialplan for those extensions, it should work.  You may need to
set 'subscribecontext' (in sip.conf) for the phone that will be watching
the extensions unless your hints are in the same context as the phone
uses for outbound dialing.

Of course, what the device does with the various payloads contained in
the SIP NOTIFY messages is going to be different for each phone.  On the
Grandstream I can see 'not in use' (solid green) and 'ringing' (flashing
red) distinctly, but 'unavailable' and 'in use' are both mapped to a
solid red, which makes it somewhat useless for transiently connected
user agents like softphones. 


Hopefully someone with experience will speak up and confirm that the
7900 series does interop properly with Asterisk for SUBSCRIBE and
NOTIFY.

If that doesn't work, you could always go with a software solution, like
the Flash Operator Panel.  voip-info has a list (look at the Operator
section on the page): http://www.voip-info.org/wiki/view/Asterisk+GUI

-- 
j. 


-- 
This message has been scanned for viruses and
dangerous content by Athens Hyperion Scanner, and is
believed to be clean.

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To UNSUBSCRIBE or update options visit:
   http://lists.digium.com/mailman/listinfo/asterisk-users

Re: [asterisk-users] Learn some terminalogy before mountingthistask.

2007-08-06 Thread James FitzGibbon
On 8/6/07, James R. Stevens [EMAIL PROTECTED] wrote:

  I'm reading the PDF on the Cisco Expansion module and it says 'When used
 as a DN key buttons are illuminated …'



 Is that what we are doing within Asterisk or Trixbox when we configure an
 extension?  (A Directory Number??)


I suspect DN Key is just one way of describing a multi-function button
that can both display extension status and serve as a speed dial / transfer
destination.

On the Grandstream I have to configure the expansion car buttons as
Asterisk BLF buttons, even though BLF (busy lamp field) isn't an
Asterisk setting that I turn on.  To enable BLF functionality in Asterisk, I
have to set up hints in the dialplan and configure the user agent to
subscribe to status notitications for those extensions.

I'd search for asterisk user testimonials to be safe (assuming nobody steps
up and says I got that working).  Often times you'll find someone's blog
about how they got a feature working with a particular piece of hardware,
along with configuration samples.

-- 
j.
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Re: [asterisk-users] Learn some terminalogy before mountingthistask.

2007-08-06 Thread Ryan Amos
The 7914 only works under SCCP; the SIP firmware does not support it at
all (the expansion panel won't even power on fully.) The SCCP channel
driver under Asterisk doesn't really support the 7914 very well,
currently it will only show onhook/offhook state (though there has been
much discussion recently about changing this.) If you want to do this
with SIP then you're better off with something like the grandstream
mentioned, or just use the Flash Operator Panel (IMO it gives you more
flexibility at a much lower cost.)
 
I have personally found receptionist phone functionality handled much
better with FOP. I have a 7914 and its functionality (and usefulness) is
very limited under Asterisk.



From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of James R.
Stevens
Sent: Monday, August 06, 2007 10:41 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Learn some terminalogy before
mountingthistask.



Thank you for your reply as it is exactly what we would need. Sorry I
didn't find it myself. I do have a question about configuration within
Asterisk. 

 

I'm reading the PDF on the Cisco Expansion module and it says 'When used
as a DN key buttons are illuminated ...'

 

Is that what we are doing within Asterisk or Trixbox when we configure
an extension?  (A Directory Number??)

 

From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of James
FitzGibbon
Sent: Monday, August 06, 2007 7:37 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Learn some terminalogy before
mountingthistask.

 

On 8/5/07, James R. Stevens [EMAIL PROTECTED] wrote:

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?


You're probably looking for something like this:

http://www.cisco.com/en/US/products/hw/phones/ps379/products_data_sheet0
9186a008008883d.html 

I have no experience integrating this specific piece of hardware with
Asterisk, but I've done what you're trying to do with the Grandstream
equivalent for our front reception:

http://www.grandstream.com/gxp2000.html

and

http://www.grandstream.com/gxp2000ext.html

As I understand it, so long as the device can do a SIP SUBSCRIBE for
each extension you want to monitor and you configure hints in your
Asterisk dialplan for those extensions, it should work.  You may need to
set 'subscribecontext' (in sip.conf) for the phone that will be watching
the extensions unless your hints are in the same context as the phone
uses for outbound dialing.

Of course, what the device does with the various payloads contained in
the SIP NOTIFY messages is going to be different for each phone.  On the
Grandstream I can see 'not in use' (solid green) and 'ringing' (flashing
red) distinctly, but 'unavailable' and 'in use' are both mapped to a
solid red, which makes it somewhat useless for transiently connected
user agents like softphones. 


Hopefully someone with experience will speak up and confirm that the
7900 series does interop properly with Asterisk for SUBSCRIBE and
NOTIFY.

If that doesn't work, you could always go with a software solution, like
the Flash Operator Panel.  voip-info has a list (look at the Operator
section on the page): http://www.voip-info.org/wiki/view/Asterisk+GUI

-- 
j. 


-- 
This message has been scanned for viruses and 
dangerous content by Athens Hyperion Scanner
http://www.athensdistributing.com/ , and is 
believed to be clean. 
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To UNSUBSCRIBE or update options visit:
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Re: [asterisk-users] Learn some terminalogy before mountingthistask.

2007-08-06 Thread Al lists
what you are reading on Cisco manual DN is a completely different concept
that what we are dealing in asterisk.
In CME you refer to each number as a DN, that concept does not exist on
Asterisk.
Although Asterisk support SCCP (Skinny) and H323, but its always easier and
better to use SIP or IAX.
if you like to have a reception phone with BLF, there are lots of options to
choose from.
Beside the fact that i don't like quality of Cisco Phones, I usually get
better and professional results with Polycom.
But again that is my opinion.


On 8/6/07, Ryan Amos [EMAIL PROTECTED] wrote:

  The 7914 only works under SCCP; the SIP firmware does not support it at
 all (the expansion panel won't even power on fully.) The SCCP channel driver
 under Asterisk doesn't really support the 7914 very well, currently it will
 only show onhook/offhook state (though there has been much discussion
 recently about changing this.) If you want to do this with SIP then you're
 better off with something like the grandstream mentioned, or just use the
 Flash Operator Panel (IMO it gives you more flexibility at a much lower
 cost.)

 I have personally found receptionist phone functionality handled much
 better with FOP. I have a 7914 and its functionality (and usefulness) is
 very limited under Asterisk.

  --
 *From:* [EMAIL PROTECTED] [mailto:
 [EMAIL PROTECTED] *On Behalf Of *James R. Stevens
 *Sent:* Monday, August 06, 2007 10:41 AM
 *To:* Asterisk Users Mailing List - Non-Commercial Discussion
 *Subject:* Re: [asterisk-users] Learn some terminalogy before
 mountingthistask.

  Thank you for your reply as it is exactly what we would need. Sorry I
 didn't find it myself. I do have a question about configuration within
 Asterisk.



 I'm reading the PDF on the Cisco Expansion module and it says 'When used
 as a DN key buttons are illuminated …'



 Is that what we are doing within Asterisk or Trixbox when we configure an
 extension?  (A Directory Number??)



 *From:* [EMAIL PROTECTED] [mailto:
 [EMAIL PROTECTED] *On Behalf Of *James FitzGibbon
 *Sent:* Monday, August 06, 2007 7:37 AM
 *To:* Asterisk Users Mailing List - Non-Commercial Discussion
 *Subject:* Re: [asterisk-users] Learn some terminalogy before
 mountingthistask.



 On 8/5/07, *James R. Stevens* [EMAIL PROTECTED] wrote:

 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?


 You're probably looking for something like this:

 http://www.cisco.com/en/US/products/hw/phones/ps379/products_data_sheet09186a008008883d.html


 I have no experience integrating this specific piece of hardware with
 Asterisk, but I've done what you're trying to do with the Grandstream
 equivalent for our front reception:

 http://www.grandstream.com/gxp2000.html

 and

 http://www.grandstream.com/gxp2000ext.html

 As I understand it, so long as the device can do a SIP SUBSCRIBE for each
 extension you want to monitor and you configure hints in your Asterisk
 dialplan for those extensions, it should work.  You may need to set
 'subscribecontext' (in sip.conf) for the phone that will be watching the
 extensions unless your hints are in the same context as the phone uses for
 outbound dialing.

 Of course, what the device does with the various payloads contained in the
 SIP NOTIFY messages is going to be different for each phone.  On the
 Grandstream I can see 'not in use' (solid green) and 'ringing' (flashing
 red) distinctly, but 'unavailable' and 'in use' are both mapped to a solid
 red, which makes it somewhat useless for transiently connected user agents
 like softphones.


 Hopefully someone with experience will speak up and confirm that the 7900
 series does interop properly with Asterisk for SUBSCRIBE and NOTIFY.

 If that doesn't work, you could always go with a software solution, like
 the Flash Operator Panel.  voip-info has a list (look at the Operator
 section on the page): http://www.voip-info.org/wiki/view/Asterisk+GUI

 --
 j.

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