SPLs for KDDI Trunk Support
When required by your service provider, configure the following spl-options in the sip-interface facing the KDDI trunk:
- Control-Surr-Reg
When configured, this SPL triggers the following functions by the ESBC:
- Sends the IP address of the egress sip-interface in the host part of the Call-ID within SIP INVITE requests to KDDI.
- Removes the string “sbc” from the host part of the Call-ID while sending out de-REGISTER requests, and adds the egress sip-interface IP address to the host part of the call-id.
- Sends two de-REGISTERs messages with at least a 1 second interval for the same AOR. The ESBC continues to do this if you reboot it.
Prior to the availability of this pre-loaded SPL, you could configure the same functions after uploading the following external SPLs:
- numberlua.1.1
- SurrogateContact.0.3