[OpenSER-Users] LCR module: missing the link between lcr and gw

[CSB]

I have read and re-read the overview of the lcr module but still think I'm
failing to understand it.

What I want to achieve is routing to different gateways based on number
dialled e.g. 001, 0044, 0086 should result in different gateways.

Looking at the tables, I would guess that the link is lcr -> gw_grp -> gw as
shown in the following example:
lcr
prefix from_uri grp_id priority
001             1      1
001             2      2
0044            3      1
0086            4      1
0086            5      2

gw_grp
grp_id grp_name
1      US 1
2      IS 2
3      UK 1
4      China 1
5      China 2

gw
gw_name grp_id ip_addr port uri_scheme transport strip prefix
A       1      192.1   5060                      1     011
B       2      192.2   5060                      1     011
etc

I don't think I have understood correctly because the documentation implies
that gw_grp is optional.

Is there a tutorial for this module that could calrify my understanding? I'm
also trying to understand what the various avps are used for. Any advice
appreciated.

Regards

Cameron