Circuit-pack-level, administrable A- or Mu-Law companding
CRC-4 generation and checking (E1 only)
Stratum-3 clock capability
ISDN-PRI T1 or E1 connectivity
Line-out (LO) and line-in (LI) signal leads for unpolarized, balanced pairs
Support for CO, TIE, DID, and off-premises station (OPS) port types that use any of the following protocols: - robbed-bit signaling protocol, - proprietary bit-oriented signaling (BOS) 24th-channel signaling protocol, or - DMI-BOS 24th-channel signaling protocol
Support for Russian incoming ANI
Support for universal, digital, signal level-1equipment in wideband ISDN-PRI applications
Test-jack access to the DS1 or E1 line, and support of the 120A integrated channel-service unit (ICSU) module
Support for the enhanced maintenance capabilities of the ICSU. These circuit packs can communicate with Avaya Interactive Response System
