[OpenSIPS-Users] Mid-Registrar Capabilities
bakern at gmail.com
Thu Oct 19 19:43:03 EDT 2017
I was hoping to get some insight on some capabilities of the relatively-new
mid-registrar module. I'm not sure if this is the best place for that, but
I thought it might be a good place to start. I'm hoping to use OpenSIPS as
an SBC for remote users to handle far end NAT, extra security, etc., and it
seems like mid-registrar would be ideal as part of that solution. However,
if it isn't a requirement to take registration load off of the main
PBX/registrar, I'm not sure if it would be the best choice over just
proxying REGISTERS (such as in this suggestion
setting it up as a B2BUA (like this tutorial:
https://www.opensips.org/Documentation/Tutorials-B2BUA), which seems to be
the more frequently used implementation for an SBC for remote users.
In addition to the general usage scenarios, I have two specific questions
about the mid-registrar module:
1. Would the mid-registrar module be useful for handling
SUBSCRIBE/NOTIFY/PUBLISH messages between the remote user and the main
registrar? Any examples I've found and the module documentation seem to
only cover registrations.
2. Is there a reason the mid-registrar can't store registrations in the
database to handle restarts or crashes better? And if so, are there any
workarounds for this? When I try to set:
modparam("usrloc", "db_mode", 2)
I get the error message:
ERROR:mid_registrar:mod_init: the 2.3 mid_registrar only works with
usrloc 'db_mode = 0'!
Any help would be greatly appreciated!
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