RAD Data comm E1/T1, Modular Access Device with Integrated Router T1 Features, E1 Features

Chapter 5 Setup Menu FCD-IPMInstallation and Operation Manual

T1 Features

•Nominal rate - 1.544 Mbps

•Data rates are multiples of 56 Kbps or 64 Kbps (N x 56 Kbps or N x 64 Kbps, N = 1 - 24)

•Time slot assignment is user selectable

•Link interface includes integral CSU/DSU depending on user configuration of the transmit level, 0 to -22.5 dB for Channel Service Unit (CSU) or 0-655 feet for Data Service Unit (DSU)

•Framing modes: Super Frame (SF (D4)) or Extended Super Frame (ESF)

•Line code: Alternate Mark Inversion (AMI)

•Zero suppression modes: B8ZS, B7ZS or transparent

•Master system clock:

Internal oscillator

Recovered from the link 1 received data

Recovered from the sublink received data (for FCD-IPM with a Sublink).

•Variety of Loopback possibilities:

Network activated loopbacks (PLB, LLB)

Facility Data Link (FDL) loopbacks

User-configurable local or remote loopbacks.

•Extended Super Frame (ESF) diagnostic for previous 24 hours collected in 15-minute intervals (according to the AT&T PUB 54016).

E1 Features

•Nominal rate - 2.048 Mbps

•Data rates are multiples of 56 Kbps or 64 Kbps (N x 56 kbps or N x 64 kbps, N = 1…31)

•Time slot assignment is user selectable

•E1 interface with or without LTU

•Interfaces: balanced or unbalanced

•Framing modes: G732N and G732S

•Optional Cyclic Redundancy Check (CRC-4)

•Line code: HDB3

•Master system clock:

Internal oscillator

Recovered from the link 1 received data

Recovered from the sublink received data (for FCD-IPM with a Sublink).

•Loopback: User-configurable local or remote loopbacks

5-34 Interface Parameters Menu