Table of Contents
Advertisement
Line Interfaces
The Line Setup screen is made up of two fields, Current Setup (which displays the saved and active settings)
and Setup. The contents of the Current Setup field will not change until after the setup parameters have been
properly loaded. The Setup field is used to load the parameters into the line interface. The parameters you
select should match the parameters of the digital communication line provided by your Telco.
The proper loading sequence is:
•
Select the desired Line Type and wait for the screen to refresh (the available menu options will
change based on the selected line type).
•
Change any of the remaining options as needed.
•
Click on the Save button and wait for the screen to refresh. The Send button will now be active.
•
Click the Send button and wait for the screen to refresh (this takes approximately 45 seconds).
•
Now the Current Setup field will reflect the new settings.
Line Type
Three selections are available, T1-RBS, T1-PRI and E1-PRI. Units leave the factory set to E1-PRI. Line
Interfaces that are activated in the field (when an MA30EXP port expansion module is installed) will default to
T1-RBS. Whenever the line type setting is changed form E1-PRI to a T1 choice (or from a T1 choice to E1-
PRI), after saving and sending the configuration change, the unit MUST be restarted. However, changing from
T1-RBS to T1-PRI or changing any other parameter (for example the Framing Format or Line Build Out) does
NOT require a system reboot.
Tl PRI
A T1 line implementing PRI signaling (commonly referred to as a PRI line). PRI (ISDN) signaling is a layer 2
protocol. T1-PRI (23B+D) uses channels 1 through 23 to Bear (carry) the calls (1 call per channel) and uses
th
the 24
channel (D Channel) as the signaling channel. The D-channel is used to send Call Setup and Call
Progress messages between Telco's central office switch and the MultiAccess (premise equipment). PRI
Signaling allows for analog calls or digital calls to be made per channel. When this line type is selected, 23
modems will be made available to this particular interface (ttyMX00 through ttyMX22, with x being a variable A
through D, depending if the Line Interface is 1 through 4).
T1 RBS
A T1 line implementing Robbed Bit Signaling (commonly referred to as a standard T1 line). All 24 channels are
Bearer channels, supporting analog calls only. The signaling of calls between the central office equipment
(FXO side) and the MultiAccess (FXS side) is done within each channel using the AB bits and DTMF tones.
When this line type is selected, 24 modems will be made available to this particular interface (ttyMX00 through
ttyMX23 with x being a variable A through D, depending if the Line Interface is 1 through 4).
E1 PRI
An E1 line implementing PRI signaling. PRI (ISDN) signaling is a layer 2 protocol. E1-PRI has 32 channels
numbered 0 through 31. Channel zero is used as the framing channel, channels 1 through 15 and 17 through
31 are the bearer channels and channel 16 is the D-Channel (call signaling channel). The D-channel is used to
send Call Setup and Call Progress messages between Telco's central office switch and the MultiAccess
(premise equipment). PRI Signaling allows for analog calls or digital calls to be made per channel. When this
line type is selected, 30 modems will be made available to this particular interface (ttyMX00 through ttyMX29,
with x being a variable A through D depending if the Line Interface is 1 through 4).
MultiAccess Communications Server MA30120 User Guide
> Line x Setup
Chapter 3 – Software
Line Interfaces > Line x Setup
118
Advertisement
Table of Contents
