The 90-21000 25-pair Telco cable is designed for use with the 90-21003 Distribution Panel
, which can be used to provide connectivity to 90-05330 FXO-8
8-Port CO Analogue Trunk Line (FXO) Interface Card and the 90-05335 FXS-8
8 Port Analogue Station SLT (FXS) Card, both of which can be installed in a Zultys MX250 IP-PBX
, and PSTN lines or anlaogue phones from the Distribution Panel itself.