[cisco-voip] Unity PIMG

[Johnson, Ken]

Oh ok interesting - so even in the T1 situation the call info would flow
over a serial link - not over the T1 - I guess it's just our PRIs that
do it natively (I assume over the D-channel but my PRI theory isn't that
great :-)

So under that scenario of the serial link was the most important thing
to eliminate (ours on the PBX is flakey which is the reason for the
interest) it sounds like possibly the digital PIMG would be a possible
best solution.

>From a cabling perspective we have an extra T1 card in the switch ready
- and existing analog lines to the Dialogic card so even dropping in the
digital unit (or T1) wouldn't be that bad on the wiring - but you've
saved me from some bad assumptions on the serial link at least.

Clearly if it doesn't offer that serial elimination advantage it's
possibly foolish to pay the nearly three times price on the T1 version
vs the 8-port analog or digital when we would only need to drop two
lines (which we can do given that our Callmanager call percentage is
growing anyway). But what I'm hearing is if we converted those analog
lines to digital ports the digital PIMG might offer that serial link
elimination we need - although perhaps the compatibility with our NEAX
2400 might be a little tougher to get going since I assume digital
station standards are not nearly as uniform as T1 or analog standards
:-)

Ken Johnson
   Mgr. Network Services,
   Information Technology
   LeTourneau University
_________________________________
 E-mail: kenjohnson at letu.edu
 Helpdesk: (903) 233-3500
 Phone: (903) 233-3520
 Web: http://www.letu.edu/infotech/

-----Original Message-----
From: Pat Hayes [mailto:pat-cv at wcyv.com] 
Sent: Thursday, March 20, 2008 5:19 PM
To: Johnson, Ken
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Unity PIMG

I'd definitely agree that moving to a PIMG integration is desirable, 
both so that you can get off of server 2000 and because they seem to be 
a lot more configurable and flexible.

All of the PIMG/TIMG solutions have the ability to provide 
calling/called party information to Unity, as long as the PBX provides 
it in the first place. In the case of the analog PIMG and the TIMG, the 
call info is passed over a serial link. For digital PIMGs, the PIMG 
emulates a digital phone, so it is able to parse the information from 
the phone's 'display'.

Assuming you've got an analog/serial integration at the moment, moving 
to one or more analog PIMGs is probably the closest 'drop in' solution, 
involving the fewest changes on the PBX side. TIMGs are a little easier 
on the wiring, but you'll have to setup a new T1 on the PBX.

-------- Original Message  --------
From: "Johnson, Ken" <kenjohnson at letu.edu>
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] Unity PIMG
Date: 3/20/2008 3:29 PM

> I have a question for those of you with Unity-PIMG experience.  We 
> continue to run our Unity 4.x infrastructure on both the native 
> CallManager integration and a Dialogic integration with analog ports
on 
> our NEC NEAX 2400 PBX.
> 
>  
> 
> We are realizing that as we migrate to Unity 5.x it may be time to put

> the Dialogic out to pasture - especially to allow us to get off
Windows 
> 2000 - however we're also wondering if we'll see any management or 
> performance benefits by making this change.  Most specifically - since

> we currently only have 10 analog ports on the PBX - we're wondering if

> we would be best advised to migrate down to the 8-port digital station

> version of the PIMG or go with the T1.  Our preference is T1/PRI 
> interfaces historically mainly for integration of caller number 
> information, etc - but we weren't sure if the digital station would 
> include this capability as well (i.e. with either PIMG solution will
we 
> be able to eliminate the serial signaling interface for calling number

> delivery?
> 
>  
> 
> Any other reasons we should either be hesitant to make this change 
> and/or choose the T1 solution vs the digital port version?
> 
>  
> 
> Ken Johnson
>    Mgr. Network Services,
>    Information Technology
>    LeTourneau University
> _________________________________
>  E-mail: kenjohnson at letu.edu
>  Helpdesk: (903) 233-3500
>  Phone: (903) 233-3520
>  Web: http://www.letu.edu/infotech/
<BLOCKED::http://www.letu.edu/infotech/>
> 
> 
>
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