Hi Chrys, So essentially you need a backup trunk, which doesn't use your main Ethernet circuit. If you don't use PRI or analog line (which would be a separate circuit from main Ethernet) you'd need another separate circuit, like Internet broadband (any technology). Then you could have a SIP Trunk between your routers over that backup circuit. If you'll be using Internet as underlying transport, I suggest you consider encryption using IPSec or just use TLS/SRTP for SIP Trunk. Of course QoS concerns apply for Internet circuit.
Bottom line, one way or another you need to have a completely separate circuit for your backup voice trunk, be it TDM based (PRI or analog) or IP based. Sergey On Fri, Sep 7, 2012 at 4:50 AM, Chrysostomos Christofi < ch.christ...@logicom.net> wrote: > Hi > > First thanks all of you for your inputs > > As I said we have one HQ Router with many branches connected with this HQ > Router through metro Ethernet over the MPLS > We need a redundant scenario if the metro is down at the branches > > Let's say that the metro going down in the one branch > Then how the remote branch could reach the HQ router? You can establish > that I think with analogue line in the branch and one PRI in the HQ router. > Then the Remote branch will dial and through the PSTN network will reach > the HQ Router. > > Correct me if I am wrong > > Now instead of PRI scenario we want to use SIP > > This was my question > > Is this possible? > > Regards > > > > -----Original Message----- > From: juancarlosanz...@gmail.com [mailto:juancarlosanz...@gmail.com] > Sent: Πέμπτη, 6 Σεπτεμβρίου 2012 11:58 μμ > To: Chrysostomos Christofi; ccie_voice-boun...@onlinestudylist.com; Dan > Quinlan (daquinla); Krishna > Cc: Online Study (ccie_voice@onlinestudylist.com) > Subject: Re: [OSL | CCIE_Voice] DATA THROUGH SIP TRUNK > > Hey Chrys, > > I am not sure if I'm understanding the requirement. But I believe you > are mixing some concepts here. SIP is not a layer 2 technology. > > Since what you need is a data connection between your sites, you have > to decide between the different layer 2 technologies your ISPs are offering > (MPLS,FrameRelay,MetroEthernet, ATM, etc..). > If you ask the ISP for a SIP trunk that is just a connection to their SIP > service, not between your sites. > > > Regards, > > > > > > > Enviado desde mi móvil BlackBerry Orange. > > -----Original Message----- > From: Chrysostomos Christofi <ch.christ...@logicom.net> > Sender: ccie_voice-boun...@onlinestudylist.com > Date: Thu, 6 Sep 2012 20:36:28 > To: Dan Quinlan (daquinla)<daqui...@cisco.com>; Krishna< > vinayak_...@yahoo.com> > Cc: Online Study \(ccie_voice@onlinestudylist.com\)< > ccie_voice@onlinestudylist.com> > Subject: Re: [OSL | CCIE_Voice] DATA THROUGH SIP TRUNK > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com >
_______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
