Manual

18
 
CrossLock is an enhanced reliability layer that can be added to links made between Comrex codecs. CrossLock is oponal
but recommended, and is available in all Comrex codecs running rmware 4.0 and higher. In the case of connecng to
Comrex codecs with earlier rmware, CrossLock is not used.
Because CrossLock creates a VPN, it has its own rules. It can decide whether or not to resend informaon based on error
correcon. It can also handle preventave forward error correcon (FEC). These decisions make up the “secret sauce” of
Crosslock, and make it eecve at navigang “bad” networks and avoiding networks that are “beyond repair”.
CrossLock can also signal encoders to “throle down” their data rate if necessary. This reduces quality but maintains
higher reliability.
The overall result of CrossLock’s funcon means a higher level of reliability for remotes. This goes a long way towards
eliminang the frustraon of dropouts and other failures during a broadcast.
In addion to carrying the audio media, CrossLock allows lots of other informaon to be shared between the endpoints,
including informaon about network quality and far-end delay sengs. This provides for much beer delay management
on both ends of the link.
One or both ends of a CrossLock connecon can ulize mulple network interfaces. This can take the form of two
Ethernet connecons, or any mix of wired and wireless networks. A common usage scenario would be aaching two
3G/4G modems to NX. In the case of one network underperforming, the majority (or all) of the data will be sent on the
good network.
For more informaon CrossLock, go to the secon on page 73.