TIM1-A2-GZ40-00
September 2004
15
Speed
All T1 lines consist of 24 channels (timeslots) that continuously run at 64 kbps for a
collective bandwidth of 1,536 kbps. Timeslot configuration dictates how many of
the channels for each port will actually receive data. Ports configured to operate as
fractional T1 lines require contiguous timeslots, as indicated in the chart below.
The default bandwidth utilizes all 24 timeslots for a speed of 1,536 kbps.
Configuration and Management
Once the TIM1500 has been installed, all parameter settings are software
selectable via the Command Line Interface (CLI), Simple Network Management
Protocol (SNMP), and the web-based Network Management System (NMS),
dependent upon the multiplexer uplink module (MUM) model installed in your BAC.
Refer to the NMS User’s Guide (NMS-A2-GB20), CLI User’s Guide
(CLI-A2-GB20), or SNMP User’s Guide (SNMP-A2-GB20) for further instruction
regarding BAC management and interface module parameter configuration.
Data Storage
Upon initial power up of the BAC, default parameters of the TIM1500 will remain in
place unless changed via the NMS, CLI, or SNMP. Once changed, new
configurations will automatically be recorded in both the Random Access Memory
(RAM) of the TIM1500 and the Non-Volatile Random Access Memory (NVRAM) of
the MUM. While data stored in TIM1500 RAM will be erased if the module is
removed from the BAC or the BAC loses power, interface module data stored
within MUM NVRAM will remain intact (even if the chassis loses power) unless
deliberately cleared or reconfigured.
Table 5. Single Line T1 Bandwidth (kbps)
Timeslots
1 – 24
1 – 21
1 –18
1 – 15
1 – 12
1 – 9
1 – 6
1 – 3
Collective Speed
1,536
1,344
1,152
960
768
576
384
192
