[VoiceOps] Inbound Redundancy

Alex Balashov abalashov at evaristesys.com
Mon Aug 24 08:40:26 EDT 2009

Insofar as numbers can be ported only to one LRN per OCN per LATA at a 
time, there is no "provider redundancy" -- SS7 is not like BGP. 
Whatever redundancy exists must exist within your carrier's network 

J. Oquendo wrote:

> Thanks to all who've answered I guess I could have been more specific so
> apologies.
> What are some options for inbound redundancy. Outbound is not an issue
> as I can swap off from my end on my routes out however, what does one do
> for inbound failures. I *heard* from my carrier that an option would be
> designed (sales talk mainly) for inbound redundancy. I would think a top
> level carrier (don't want to get into definitions of Tier1, etc.) - I
> would think they'd have a back-out change management plan on hand, but
> that to me has proven to be non-existent. (Replacing an entire switch to
> notice it failed 5 hours later at the start of a business day is not cool).
> My thoughts, review the SLA's and come up with a MTD (Maximum Tolerable
> Downtime) and the whole shtick of wording, payments, etc in which they'd
> likely shrug at - at the end of the day. From my standpoint (engineered):
> Redundant connectivity (check)
> Redundant equipment on hand (check)
> Redundant outbound links (check)
> Redundant inbound links (sort of checked)
> On my inbound links, I've DID's across carriers, but this does not (as
> we know) provide redundancy for me when one inbound carrier does fail.
> "Hi Global?, can you take these L3 DID's for me. I have their engineers
> ready to shoot you 4 million minutes in traffic until they get their act
> together. k thanks!"
> Wish it worked that way.

Alex Balashov - Principal
Evariste Systems
Web     : http://www.evaristesys.com/
Tel     : (+1) (678) 954-0670
Direct  : (+1) (678) 954-0671

More information about the VoiceOps mailing list