[VoiceOps] Multiple Tandems Per LATA

[Mary Lou Carey]

It depends on who the ILEC is and whether you're interconnected via your 
own SS7  trunks or not. In BellSouth territory you can order a 
multi-tandem super group to cover all the tandems in the LATA. You just 
pay a per-MOU charge to have them deliver the traffic to the other 
tandems. Its not worth it if you have to send a lot of traffic though. 
In the Verizon and other AT&T areas they make you order trunks to every 
tandem so you don't have a choice. In the old CenturyLink areas you 
could send traffic through your Access Tandem group as long as you had 
SPOP in your ICA.

Your other option is to "lease your PSTN connection" through a third 
party provider like Inteliquent, Peerless, or Wide Voice that have SS7 
trunks connected to every tandem in that LATA. It eliminates your need 
for SS7 links but you do pay a per MOU for every call.

MARY LOU CAREY
BackUP Telecom Consulting
Office: 615-791-9969
Cell: 615-796-1111

On 2021-06-10 04:28 PM, Mike Hammett wrote:
> When your service area is taken care of by one tandem in the LATA, do
> you connect to the other tandems in your LATA?
> 
> Currently I just send anything that's not on my single tandem (or my
> direct connections) to my interLATA termination. How common is that?
> It's pricey to build out to the other tandem.
> 
> -----
> Mike Hammett
> Intelligent Computing Solutions
> http://www.ics-il.com
> 
> Midwest Internet Exchange
> http://www.midwest-ix.com
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