This document will define the settings and setup needed to properly interface Dante Equipment with the Tellabs OLT.

Applies To

  • The Tellabs OLT running software SR29.2 and above.

  • The Tellabs ONT 140C/W, ONT 180C*

  • The Tellabs Panorama PON EMS running SR30.1 and above.

*Dante support for ONT180 soon to be released.

Dante Audio Equipment
Dante Audio equipment is a commonly used protocol for distributing audio in large venues. Dante requires time synchronization for proper operation. It also is a very heavy user of multicast for almost all its messaging and streams. This allows all the nodes to stay in sync and audio output to be time wise synchronized.

This document defines how to configure the Tellabs equipment to optimize the Dante Equipment for maximum Scalability and reliable operation.

Key Optimizations Checklist
The following section summarizes the key configurations needed for proper Dante Operation on a Tellabs Optical LAN:

  1. Dante segregation to its own VLAN
  2. Use of CBR1 (CBRrt) with > 16 Mbps of Bandwidth
  3. Disable ONT Discovery on PONs with Dante Active
  4. Change PTP responses to Unicast on Dante
  5. Primary and Secondary timing source should be above the OLT.
  6. Manage CBR bandwidth based on network needs
  7. Mark Dante traffic with high priorities

Multicast In OLAN
OLAN systems are optimized for downstream multicast (Network Interface to ONT UNI direction). Multicast is less efficient when sent in the upstream direction. Within the PON where multicast is sourced, copies must be sent to ONT UNIs on that PON that are on the Dante VLAN. Many of the optimizations stated below attempt to minimize individual copies of multicast packets that need to be sent within a PON when a source is sending multicast upstream.

For More Instructions on Dante setup within the Tellabs Optical LAN, review the ENG-010594 Interfacing with Dante Application Note on Tellabs Nexus.