2-2
P/N 480-0049-00-13
Chapter 2: Hardware Components
Hardware Description
The
Tenor DX
is a stackable/rack mountable device which provides PSTN and PBX connections (through T1/
E1/PRI lines), as well as connections to the Ethernet LAN and a PC. The unit provides eight RJ-45 ports in
which you can connect to a PBX or the PSTN.
The unit’s front panel includes connection jacks, LEDs, a reset button, and a diagnostics option; the back
panel includes a power cord connection site, an on/off switch, and a label.
Front Panel Connections and Reset Options
Figure 2-1
Tenor DX
Front Panel
•
Ports 1-8.
One RJ-45 jack for each port supports a connection to a line side (PBX) or other customer
equipment via upstream T1 or E1 lines, or to the trunk side (PSTN) via downstream T1 or E1 lines.
Each T1 line provides 24 channels. For each T1 interface, there are two types of signaling supported:
Channel Associated Signaling (CAS) and Common Channel Signaling (CCS). For T1 using CAS, chan-
nels 1-24 are available; for T1 using CCS, channels 1-23 are available.
Each E1 line provides 30B (Bearer) channels and 1D (Data) signaling channel. For each E1 interface,
there are two types of signaling supported: Channel Associated Signaling (CAS) and Common Channel
Signaling (CCS).
Adjacent port pairs (i.e., 1/2, 3/4, etc.) are configured by default to connect to each other (power off
bypass) when the unit is turned off, or when the unit is in Offline mode. This is the preferred method
when connecting one of the lines to a PBX, and its adjacent pair to the PSTN. However, if you have adja-
cent port pairs that are connected to smaller devices (i.e., both going to PSTN) in which you do not want
the two ports to be connected to each other in case of power off or offline, you should set the power off
bypass = 0. Each pair of ports (1/2, 3/4, 5/6 and 7/8) have their own online/offline and power off bypass
control. See the
Tenor
Configuration Manager
online help or the
Command Line Interface (CLI)
guide
for specific configuration information.
•
Reset.
Enables you to reset the system.
•
Diag
. Enables you to perform software diagnostic procedures.
•
LAN 1/LAN2
. 10/100 Base-T Ethernet ports. LAN 1 port provides an RJ-45 jack for an individual con-
nection to a 10/100 Ethernet LAN switch or hub via RJ-45 cable; it is individually configured with a
unique IP and MAC address. LAN2 Ethernet port is reserved for future use.
1
2
3
4
5
6
7
8
R
E
S
E
T
D
I
A
G
CONSOLE
POWER
ALERT
LAN 1 LAN 2
Line/Act
100
Line/Act
100
Port
Reset
Diag
Console Port
LAN1/LAN2
