Bill Andersen wrote: > I am thinking about a change to our company's phone "layout" and would like > to get comments from people who have done something similar. > > Currently, we have 3 locations - each with their own Asterisk PBX. The > corporate office has a PRI. Each remote location has a SIP provider for > 5 channels of SIP going to their own PBX. Interoffice calls use the PSTN. > Most inbound calls come to the headquarters via a toll free number. > > We are adding another remote office and are planning a MPLS network to > connect all locations for DATA. As we really want a "centralized" > switchboard > anyway, I thought with QoS and an MPLS, I could eliminate the remote PBXs > (and not have to buy another for the new locations) by simply using the MPLS > to > tie everything together. See below. > > /--------------------\ > | CORP HEADQUARTERS |----> PRI (23 Channels, 100 DIDs) > | Asterisk PBX | > | 30 Polycom 501s | > \--------------------/ > | > | < 3Mbps MPLS (2 T1s) > | > /--------------------\ > | MPLS "Cloud" | > \--------------------/ > | | | > | | \---SIP over MPLS 1.5Mbps T1---Branch Office 1 (5 Polycom > 501s) > | | > | \-----------SIP over MPLS 1.5Mbps T1---Branch Office 2 (5 Polycom > 501s) > | > \-------------------SIP over MPLS 1.5Mpbs T1---Branch Office 3 (3 Polycom > 501s) > > > Question 1: I've never had an MPLS network with QoS. Will the call quality > "Really" be as good as AT&T assures me it will be with QoS? > Assuming > we never have more than 5 calls going over the MPS from a > branch? > > Question 2: MPLS are pretty reliable, but last mile connections can be cut, > hardware > can fail at AT&T or whatever. Is this putting too many eggs in > one > basket? If I lose the headquarters T1s (MPLS or PRI), everyone > is > down. Would "You" do it this way? > > Question 3: (OT) For those who have used an MPLS. How much better > throughput for > DATA (NOT VoIP) should I see compared to using the Internet? > I'm mostly > just curious here and realize it is hard to compare, but when I > do any > type of file transfer between office right now, I use FTP over > the Internet > and both ends have a T1. Assuming an MPLS on each end, what is > your > experience when comparing average "throughput" compared to an > Internet > transfer. Just a guess of what you've seen. (i.e. Yes, you'll > see > a big difference, maybe a little better or couldn't really see > that > big of a difference) > > Thanks for your input. > > Bill > > > _______________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > AstriCon 2008 - September 22 - 25 Phoenix, Arizona > Register Now: http://www.astricon.net > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > One of the techs I know built such a setup for a company in australia - it actually became one of the original Asterisk case studies. She had about 200 phones over 70 sites (with between 2 and 5 phones per site) - all over an MPLS network.
Her only comments - get decent phones (she used polycoms), use g729. PaulH _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- AstriCon 2008 - September 22 - 25 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
