Aria-130 Digital Key Telephone System
Issue: 1.2
Installation Manual
42
2.4.13.3 2B-Module
The 2B-module allows another terminal, DKTU (Digital Key Telephone Unit) or SLT (Single line
Telephone) behind LKD-30DS to be connected. There are 2 kinds of 2B-modules; 2B-DTIU30 for the
connection to another DKTU behind LKD-30DS, and 2B-SLIU30 for the connection to another SLT behind
LKD-30DS. These 2B-modules can be installed only in LKD-30DS. See Figure 2.4.19 2B modules.
In ARIA-300 system, LDK-30DS with 2B-module can be connected to every even-numbered port
(0,2,4,…) of DTIB12/DTIB24/DSIB. In that case, any digital terminal can not be connected to the
consecutive port (1,3,5,…). So the total capacity of DTIB12/DTIB24/DSIB is not changed by the
connection of 2B-module.
The advantage of 2B module in ARIA-130 system;
1.
Simple wiring with two terminals.
2.
DTIB is capable of connecting to single line device through 2B-SLIU30. It is useful for the
customer who wants more single line devices even though DTIB is installed in the system.
3.
DTIB is capable of connecting to single line device such as Fax/Modem without any SLIB board.
2B modules are supported in the following condition
-
Software : 3.2 or later version (except 3.4 version)
-
Hardware: Digital Terminal Interface only, LKD-30DS, 2B-DTIU30 or 2B-SLIU30
-
Line length. See clause 2.3.3 Electrical Specifications
•
Note:
1.
In case of using 2B-DTIU30 and the secondary digital keyset, it is recommended to use the
separate main’s adapter, which confirms to the appropriate national or local electrical adapter for
the secondary DKTU.
2.
The separate mains adapter can be get in local market, the recommended specification is;
−
Output capacity: 24 to 30V DC, more than 200 mA
−
Size of output plug: the inside diameter - 2.1mm, the outside diameter: 5.5mm
The following table shows LKD series which the 2B module can be installed.
DKTU
2B-DTIU30
2B-SLIU30
LKD-30DS
Yes
Yes
LKD-30LDS
X
X
LKD-8DS
X
X
LKD-2NS
X
X
Table 2.4.11 Available 2B module in LKD series
For more details, see “Installation manual for Fig 2.4.9.a 2B-DTIU30 and Fig 2.4.9.b 2B-SLIU30”.
