The remote contains these offices (I'm not sure what some of these offices due 
- some are State/Federal offices):
Public Utilities

Permits & Inspections

Extension Office

NRCS & GSCD

Farm Service Agency

Rural Development

Election Board


I totally agree that putting all your eggs in one T1 basket sounds like crazy 
talk - however...

Here are thoughts/concerns with a totally separate sipXecs install:

1)      Manageability

a.       Patton will require additional routing rules for base functionality

b.      Additional dialing rules to route between sipx<=>sipx<=>NEC<=>etc.

c.       Greatly complicates the overall design

2)      Functionality

a.       End users are expecting the capability to plug their phones in and 
just work (at any county location) - if we are routing DID's to the remote - 
and they plug their phones in at our Emergency Operations Center - it needs to 
just ring there

3)      Costs

a.       One of the driving factors is reducing costs - having a 'server' 
(granted could be an inexpensive one), plus failover trunks (handful of POTS 
lines), plus additional analog gatways.  We are then looking at $2,000 capital 
costs and $1,000 annual operating costs.  This greatly drives down the ROI and 
it seems hard to justify those costs coupled with the added complexity of 
managing separate servers (plus having multiple DNS/DHCP scopes).  All to work 
around a potential 2% business interruption (considering a potential 1 week 
down time hazard).

A HA install could be a compromise, but that introduces its own issues - 
Perhaps a good compromise of a unified system and failover would be to have a 
second route between sites;  i.e. have a site to site vpn over the internet 
that would be a backup link.  In the event of a T1 failure, we could route 
traffic over said connection?

In a perfect world, I'd love to have a single, simple to manage phone system.  
Not 5 separate systems that I have to link together and have equipment all over 
the place that I have to keep tabs on.  Of course, I'd also like to not get 
fired for killing all of our phones :)


Nathaniel Watkins
IT Director
Garrett County Government
203 South 4th Street, Room 210
Oakland, MD  21550
Telephone: 301-334-5001
Fax: 301-334-5021
E-mail: nwatk...@garrettcounty.org<mailto:nwatk...@garrettcounty.org>

From: sipx-users-boun...@list.sipfoundry.org 
[mailto:sipx-users-boun...@list.sipfoundry.org] On Behalf Of Tony Graziano
Sent: Thursday, July 01, 2010 3:01 AM
To: maybelater
Cc: sipx-users@list.sipfoundry.org
Subject: Re: [sipx-users] sipx-users Digest, Vol 76, Issue 154

Nathaniel,

It really needs to be an analysis of "how that branch" functions. Depending on 
the role the branch serves within the organization in the event of any "natural 
disaster", especially for intra-office communication, relying on a T1 to call 
down the hall, upstairs, downstairs, etc, is perhaps "nonsensical".

A local PSTN gateway for inbound calls to be redirected for a main number, and 
for emergency outbound calling pretty well insulates it. With forty or so 
workers,  1 T1 only goes so far when it comes to calls:bandwidth. Of course, 
for branches with enough users, I always stick with a dedicated system per 
branch as I like a higher level of functionality when something goes down. For 
instance, if the T1 goes down and they can no longer make enterprise calls to 
other branches, they can dial the published number via a "copper rule" for 
dialing out via PSTN on a local gateway (as well as 911).

Ultimately there has to be a "weight" to gauge what needs to be available, and 
how efficient and connected the branch stays in an outage. With a separate 
system the users can:

1. Continue t have their phones register.
2. Call each other.
3. Check voicemail.
4. Dial around to call out via alternate gateway (analog/siptrunk).
5. Call from their desk to bug you to ask you why you haven't fixed it yet.
6. Call other branches via their PSTN published number.

Calling patterns, roles and survivability are all factors.
On Thu, Jul 1, 2010 at 2:26 AM, maybelater 
<maybela...@gmx.de<mailto:maybela...@gmx.de>> wrote:
I might not be able to configure sipx the way I want, but been working in
sales and system-consulting for 4 years now.

-breakdown of business telephony is major business killer
-according to Murphy your T1 WILL break down as soon as you rely on it too
much
-rerouting to mobile is great, but what about outbound calls ?
-need of local PSTN-Gateways is totally dependent on the task your coworkers
on the remote site are doing, the availability they need for their telephony

I am a strong believer in centralization, thus I would just configure them
on the central PBX, but there are (of course) scenarios where the customer
Or the situation demands the best possible availability


-----Ursprüngliche Nachricht-----
Von: 
sipx-users-boun...@list.sipfoundry.org<mailto:sipx-users-boun...@list.sipfoundry.org>
[mailto:sipx-users-boun...@list.sipfoundry.org<mailto:sipx-users-boun...@list.sipfoundry.org>]
 Im Auftrag von
sipx-users-requ...@list.sipfoundry.org<mailto:sipx-users-requ...@list.sipfoundry.org>
Gesendet: Donnerstag, 1. Juli 2010 05:10
An: sipx-users@list.sipfoundry.org<mailto:sipx-users@list.sipfoundry.org>
Betreff: sipx-users Digest, Vol 76, Issue 154

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--
======================
Tony Graziano, Manager
Telephone: 434.984.8430
sip: 
tgrazi...@voice.myitdepartment.net<mailto:tgrazi...@voice.myitdepartment.net>
Fax: 434.984.8431

Email: tgrazi...@myitdepartment.net<mailto:tgrazi...@myitdepartment.net>

LAN/Telephony/Security and Control Systems Helpdesk:
Telephone: 434.984.8426
sip: helpd...@voice.myitdepartment.net<mailto:helpd...@voice.myitdepartment.net>
Fax: 434.984.8427

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Why do mathematicians always confuse Halloween and Christmas?
Because 31 Oct = 25 Dec.

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