Chapter 5 Setup Menu FCD-IPM Installation and Operation Manual
5-34 Interface Parameters Menu
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