88
Interface standard
• G.703/T1 102
• G.704
• AT & T TR 54016
• AT & T TR 62411
• ANSI T1.403
Interface rate 1.544 Mbps
cable type T1 cable (100-ohm shielding network cable)
Operating mode
CT1, ISDN PRI (only supported by the HMIM-2T1)
FT1 (only supported by the HMIM-4T1-F)
Supported services
• Backup
• Terminal access service
• ISDN PRI (only supported by the HMIM-2T1)
Interface LEDs
Figure 103 HMIM-2T1 panel
Figure 104 HMIM-4T1-F panel
Table 139 LED description
LINK/ACT
• On means the carrier signal has been received.
• Off means no carrier signal has been received.
• Flashing means data is being transmitted or/and received.
LP/AL
• On means the interface is in a loopback.
• Off means no loopback or alarm is present.
• Flashing means an alarm indication signal (AIS), loss of frame alignment (LFA)
signal, or remote alarm indication (RAI) signal is present.
Interface cables and connection methods
For more information about T1 interface cables and connection methods, see "T1 interface."
HMIM-8E1T1/HMIM-8E1T1-F
Introduction
• HMIM-8E1T1 module
The 8-port channelized E1/CE1/T1/CT1/PRI interface module transmits, receives, and handles
T1 data streams. In addition, you can use the module for CT1 access and ISDN PRI. The
module allows arbitrary grouping of 31 channels.
• HMIM-8E1T1-F module