Hello Brian, Thank you so much!!!!
On 6/12/13, Brian LaVallee <[email protected]> wrote: > Hi Nick, > > Going from DS1 to OC-n is a multi-step process. Typically requiring a > hardware device to handle each MUX step. But you can find hardware that > handles multiple MUX steps together. The connection is coming into our premise on the OC-n transport. The question now is should we have it multiplexed as DS1 or VT1.5s to the DS3s. What is common today, I think DS1 VT1.5s mappings are more flexible? > > VT1.5 is just a raw OC-n channel containing a single DS1. > An M13 device converts between DS3 and DS1. > Understood!!! > A DACS (DCS or DXC) provides M13 conversion, sometimes even capable of > extracting the raw VT1.5 signal directly to DS1. > > The ILEC transport option you choose really depends on the terminating > interface. Do you want to connect with a DS3 or OC-n? > The transport is coming in as OC-n. What I am trying to figure out are the advantages of mapping the STS-1 using DS1s or VT1.5s. > No matter what hardware you choose, you will need to convert to single > copper pairs (DS1/T1) to connect to your Asterisk boxes. So an M13 or DCS > will be necessary to reach the DS1 level. > > The device you choose depends on budget and growth expectations. Typically > a DCS is an expensive investment, handling hundreds of DS3's. An M13 device > is typically a small unit that handles one or two DS3's. > This is almost understood. Is an M13 device basically a MUX (In our case STS-1->DS1)? From there we would plug the signaling into the Quad Digiums as you mentioned (this is where I get more comfortable....). Could you kindly post a link to an entry level DCS with OC-n interfacing and M13s being used today. That way I can see what functionality each provides and determine which better suits our need. I am guessing, but hate to presume: M13: Adtran MX2800 DCS: Mediant 3000, Metaswitch 0610 etc.. > The advantage comes when you add the 29th DS1. With VT1.5 it's just adding > a single channel, DS3 will require another whole DS3 to get an additional > DS1. > This is why we are going SONET. It's a new transport layer for me compared to DS3s, and want to make sure I can put everything together at the network level. > > Sincerely, > Brian LaVallee > Thank you kindly, Nick from Montreal. -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
