help with voip using cisco router with voip modules
 

Hi Y'all,

Dont know if this is the right place to ask this but here goes...

we have a remote branch office that does not have any connection to
the PSTN since there are no telephone lines there but they need to be
able to communicate among themselves, the head office and PSTN. we're
thinking of implementing voip. here is our first try at a setup

remote branch Head office
analog phones -> PBX ->router--->internet <---router<--PBX<--analog
phones
|
|
^
PSTN
The PBX is needed so that they can users at the remote branch can talk
to each other, internet is used since that is the only available
connection


Basically, the remote branch must be able to talk among themselves,
talk to the head office, and must be able to dial in to the local PSTN
avoiding long distance charges. (i.e., remote branch talks to the head
office as a local number, to the PSTN via the head office connection
to the PSTN. we're thinking of using ip pbx/phones but we're concerned
that there might still be a 100m limit of the utp cables, thus users
from the remote branch might not be able to talk with each other?. any
suggestions?

thanks in advance

Re: help with voip using cisco router with voip modules
 

ikelozada@yahoo.com (ike lozada) wrote in message news:<aa1c193d.0312280405.3e1da3a7@posting.google. com>...
> Hi Y'all,
>
> Dont know if this is the right place to ask this but here goes...
>
> we have a remote branch office that does not have any connection to
> the PSTN since there are no telephone lines there but they need to be
> able to communicate among themselves, the head office and PSTN. we're
> thinking of implementing voip. here is our first try at a setup
>
> remote branch Head office
> analog phones -> PBX ->router--->internet <---router<--PBX<--analog
> phones
> |
> |
> ^
> PSTN
> The PBX is needed so that they can users at the remote branch can talk
> to each other, internet is used since that is the only available
> connection
>
>
> Basically, the remote branch must be able to talk among themselves,
> talk to the head office, and must be able to dial in to the local PSTN
> avoiding long distance charges. (i.e., remote branch talks to the head
> office as a local number, to the PSTN via the head office connection
> to the PSTN. we're thinking of using ip pbx/phones but we're concerned
> that there might still be a 100m limit of the utp cables, thus users
> from the remote branch might not be able to talk with each other?. any
> suggestions?
>
> thanks in advance

Hi,

IMHO, there are a number of ways of doing what you want, all depends
on the size & scope of your home/remote office. You can do an all
VoIP solution with IP phones/Call Mangager, that eliminates the need
for any PBX at the remote site, or you can have a PBX/Key System @ the
remote site and use a digital or analog telephony interface in say a
C2600 series router to interface with. There are so many things you
can do, I would be happy to offer some suggestions but I'd need a
little bit more info. If you use IP phones, yes you'll have the 100m
limitation on UTP Ethernet. (that's user to closet/switch, not user to
user of course). The things I'd like to know are - A) How many users
@ remote site, B) How many users @ home site, C) Internet connection
type/size/speed, D) Are the internet connections @ both sites from the
same ISP? E) is there existing telephony equipment in place that you
want to reuse?

I'm sure there will be more ??? later, but that'll get us started.

Rob