Nortel-Norstar Digital Trunk Interface Card T1 ICS (NT7B74GA) Refurb
Nortel Part # NT7B74GA Norstar Digital Trunk Interface (DTI) terminals a 24-channel T1 link from a public or private network. It will also support fractional T-1. An RJ48 jack provides the interface to the T1 network. Each of the 24 channels can be configured to emulate either loop-start, E&M, or DID trunks. The DTI has an integrated Channel Services Unit (CSU). The CSU provides line isolation, signal regeneration, and network performance monitoring. The CSU can be turned off for use with an external CSU. Must use with clock services cartridge. For use on the Norstar Modular ICS only. MPN: NT7B74GA Condition: Refurbished
