Tctrl Version 2.6
| SIP Reason Header RFC 3326
|Added Overlap Sending in ISDN and SS7||12661||2.6.31|
| NAT traversal
|SCCP TCAP/MAP opcode routing||13337||2.6.75|
|Radius Redundancy for Call Detail Records (Accounting)||7107||2.6.24|
|Playing Prompts in calls (Announcements)||12009||2.6.24|
 Customer's RFC (Request For Change) tracking number.
The latest release is available at TelcoBridges forum
It is considered a minor upgrade when moving, for example, from upgrading a minor point release (e.g., v2.6.1 to v2.6.2).
A license upgrade activates new functionality or capacity in the system. Example of license upgrades include adding or unlocking additional capabilities.