Old AudioCodes devices suffer from a problem where they
127.0.0.1 address in Record-Route headers (added by Sipwise C5’s
internal components) with the device’s IP address.
Supposedly, the whole range of AudioCodes devices with a firmware version below
6.8.X are affected.
As a workaround, you may enable the topos feature to stop sending Record-Route
headers out. To achieve this, execute the following commands:
ngcpcfg set /etc/ngcp-config/config.yml kamailio.lb.security.topos.enable=yes ngcpcfg apply 'enable topos for audiocodes devs workaround'