[SR-Users] Kamailio LCR module memory concern

[Alex Balashov]

On 06/10/2015 12:52 PM, Juha Heinanen wrote:

> i wonder how it is possible to have so many distinct e.164 prefixes for
> transit unless you need to deal with individual subscriber numbers.

It's quite possible for folks who run dialler traffic[1], at least in 
the US. The reasons are:

- Most rate centres in the US are subject to number pooling, which 
allocates numbers in blocks of 1000 using 7-digit prefixes. This yields 
a stupefyingly large number of prefixes just for domestic USA routing.

- Wholesale ITSPs, particularly ones specialising in short-duration 
traffic, typically utilise a large number of vendors, since many of them 
will fail the call due to race-to-the-bottom LCR. We once had a customer 
with 135 million routes from around 30 different vendors.

-- Alex

[1] Incidentally, the subject of my recent Kamailio World talk!

https://www.youtube.com/watch?v=u30Fyp3QanE

-- 
Alex Balashov | Principal | Evariste Systems LLC
303 Perimeter Center North, Suite 300
Atlanta, GA 30346
United States

Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/