Question: Can we use 1 x MVX-A16 port's audio output to 5 wall boxes of total distances of about 310m?  They may or may not use all 5 ports simultaneously. Answer:We do not encourage 1 x MVX-A16 port to 5 wall boxes which may be used simultaneously.  Please use an Audio Distribution Amp for splitting to 5 wall boxes.
Additional notes on installation:Cabling standards
The term category 5 (CAT5) refers to a communications cable standard that calls out transmission characteristics of twisted-pair cables for data communication use. For each increasing category (CAT) number the guaranteed bandwidth for data communication purposes increases.
For the 4-pair wiring scheme between the matrix panels, Eclipse HX uses the AT&T T568B wiring standard for data cables. Cables for use with Ethernet 10-BASE-T are of this type. Cables are available in solid or stranded wire in either #24 or #26 AWG.
There are at least five different wiring standards that use the RJ-45 connector. Although they look identical, many pre-made cables and utility items, like couplers, will not work properly with your Eclipse HX system. It is essential to know what wiring standard is used in any accessories.
Clear-Com recommends:• The use of shielded CAT5 twisted cable with RJ-45 connectors on either end. However, there are various methods available to deliver these cables from one place to another.• The use of shielded cables throughout the installation for EMC conformance. Unshielded cables can be used but in this case Clear-Com does not guarantee the crosstalk and noise figures.Long runs with flat cable are not recommended. The data and audio pairs are not twisted which means that the crosstalk within the cable is high.