User`s manual
H.323 User's Manual 2. Mediant Physical Description
Version 5.0 29 December 2006
2.1.1 I/O Modules
The Mediant 1000 can house both analog and or digital modules:
Analog modules: the gateway supports up to six replaceable analog FXO and/or
FXS modules. Each module contains four analog RJ-11 ports. Therefore, the gateway
can support up to 24 analog ports (6 modules x 4 ports).
Digital modules: the gateway supports up to four digital trunks (fully flexible, from a
single up to four trunks per module). The digital modules are available in 1, 2, or 4
spans. If the power fails, a relay connects trunks 1 to 2, and 3 to 4 (in the same
module) acting as a fallback for PSTN trunks.
Note: The standard FXO modules support outdoor and indoor (lightning
protection) loop start signaling. For ground start signaling, the FXO G
modules are required. These modules support loop and ground start, and
only support indoor protection. (The FXS modules support both loop and
ground start signaling.)
To enable ground start, use the ini file parameter GroundKeyDetection
(refer to Section 6.5.2 on page 217).
2.1.2 CPU Module
The CPU (Central Processing Unit) module is located to the right of the six I/O
analog/digital modules.
Figure 2-1 shows the CPU module’s front panel ports and connectors described in
sequence from left to right in the following sections.
2.1.2.1 Dry Contact Connector (Labeled I and II)
The Mediant 1000 provides dry contacts that can be connected to an external audible or
visual alarm system (bell, siren, hooter, or light).
2.1.2.2 Audio IN/OUT
1
The Audio IN/OUT port is indicated by the musical note and loudspeaker symbols (refer to
Figure 2-1 on page 27). It is used for Music on Hold (IN) and paging (OUT).
2.1.2.3 10/100 Base-TX Ethernet Ports (Labeled I and II)
Two 10/100 Base-TX Ethernet ports provide a dual Ethernet redundancy scheme,
protecting against failure (for example, a disconnection) of any cable or associated LAN
switch port.
2.1.2.4 RS-232 Port (Labeled I0I0)
The RS-232 port is used to access the CLI (Section 4.2.4 on page 50) and to receive error
/ notification messages (a 9-pin DB adapting cable is supplied).
Note: The RS-232 port isn’t intended for a permanent connection.
1
Not currently supported. Contact AudioCodes regarding availability.