Specifications

Section 360-381-202

 Temperature hardened (−40 to +65 C)

 Combines the functions of a LIU and a CSU, allowing direct connections to public T1 networks

 Operates in superframe (SF) or extended superframe (ESF) modes, uses AMI or B8ZS line coding,

and performs loopback, test and performance monitoring of the T1 interface (local and remote)

 Complies with UL1950, FCC part 68, FCC part 15 and NEBS Level 1

 Meets Bellcore 1089, 43801, 62411, 54016 TR-57 and ANSI T1.403 standards for T1.

1.6 Performance History

This unit stores performance history for the last 30 days in 24 hour intervals and over the last 24 hours in 15-min-

ute intervals. This performance history includes failed seconds, errored seconds (ES) and severely errored sec-

onds (SES) (per T1M1.3/93-00). A reset is provided for the current 15-minute interval. A reset is also provided for

the current 24 hour interval and will reset all 15-minute intervals within that 24 hour period.

1.7 Network Management Interface

The ICB stores all configuration settings in the T1-S. This unit is managed through the Network Management In-

terface (NMI), which controls the provisioning of the unit and obtains status information from the unit. This is

achieved through the craft interface using RS232, SNMP using Ethernet or a proprietary graphical interface using

Ethernet. For operation of this interface, see the Craft Port documentation, SNMP Network Node Manager docu-

mentation or Network Management Software documentation.

This unit is shipped with default provisioning for all units in the ICB. The default provisioning for a card may be

found in the documentation that is shipped with the product. Provisioning is altered through the software interface.

If the provisioning is changed, it will maintain the new provisioning even if power is lost. If replaced with a new

unit, the new unit’s provisioning must be changed to the same provisioning as was set for the prior unit. The unit

provides two levels in which provisioning can be reset. “Provisioning Reset to Stored Value” will soft reset the

ICB. “Provisioning Reset to Factory Defaults” will clear all settings for provisioning, timeslots and IP information.

A Real-Time Clock (RTC) is provided through the Network Management interface.

1.8 Status Indicators

This unit is able to provide a variety of status information. The following is a list of all status information available

from the T1-S. Some status information is also provided through front panel LEDs. See individual channel units

for additional status information.

 Red (AR) Alarm Status (LED)

 Yellow (AY) Alarm Status (LED)

 Loss of frame (LOF) Alarm Status

 Loss of signal (LOS) Alarm Status

 Power status (LED)

 T1 framing selected

 Line code

 Trunk processing (TP) status (LED)

 Transmit T1 timing source

 Line build out selected

 T1 loopback selected (LED)

 Loss of valid external timing source (LED)

 Carrier Group Alarm Immediate (CGAI) action

 Carrier Group Alarm Delayed (CGAD) action