Why not two external IP addresses for Asterisk?

[jcolp]

It’s not something I’ve looked into or scoped out because not many people have brought it up, so I don’t have anything else to add really.

[ringdom]

Understood. I really appreciate all of the insights you have shared. Thank you so much.

[johnkiniston]

@ringdom

The issue I see there is all of my phone endpoints. Would they need to register with both instances or just one? If both, how would they choose which one to use? If one, what happens if the one they are registered with is down?

Yealink phones support multiple SIP server addresses if it helps, They can do primary/failover or dual registrar to two servers at the same time.

[ringdom]

Following up here, I seem to have hit a snag with my plan. When I try to configure multiple TLS transports as shown in the example config above, I get errors like the following:

ERROR[2174] res_pjsip/config_transport.c: Transport 'system-internet-tls-2' could not be started: Object with the same type exists (PJSIP_ETYPEEXISTS)

The documentation here seems to suggest that mutliple TLS transports should be possible. However, this documentation states that:

PJSIP does not allow multiple TCP or TLS transports of the same IP version (IPv4 or IPv6).

When I run pjsip show transports I only ever get one TLS transport, so I guess the second link is correct. Maybe the first link is just out of date? Or, am I doing something wrong in my config?