T1/PRI Interface blade is for T1 and ISDN Primary Rate interface card applications.
This blade has a single 24-Channel 64 KB/s digital signal circuit that can be configured for T1 trunk or PRI applications. Blade is used for 24 consecutive trunks.
For T1, the trunks can be setup as LS GS DID E&M Trunks or ANI/DNIS E&M Trunks. For PRI configuration the blade supports basic PRI Call control, caller ID (name and number when allowed by telco), speech and 3.1Khz audio.