ITSP -- CUBE -- CUCM -- SIP/SCCP IP Phone
ITSP -- CUBE -- CUCM -- MGCP/QSIG to turret System
ITSP -- CUBE -- CUCM -- SIP to another Turret system
What is the proper setup for configuring a my SIP trunks?
The CUBE is configured for EO going to the ITSP and CUCM
CUCM is configured to use DO via the SIP profile.
CUCM SIP trunk also has "MTP required" unchecked.
What is the difference between setting the SIP Profile "early offer support for voice and video calls" to Best Effort (do not insert MTP) and Mandatory (insert MTP if needed)?