RAD Data comm Modular Access Device with Integrated Router 用户手册

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