DMS DTC's
Nortel DMS 250/300 DTC's are configurable for T1 or E1, and can support SS7, C7, PRI ISDN, MF, DTMF, R2, and other formats. Sirius switch technicians are certified on the Nortel DMS 250/300, having received training from Nortel. Sirius switch technicians have an average of 10+ years working on the Nortel DMS 250/300.