User manual

MX-ONE SYSTEM DESCRIPTION
54 21/1551-ASP 113 01 Uen N2 2014-01-28
5.1.3.3 MX-ONE Classic
The MX-ONE Classic media gateway is provided as one 7U high,
19-inch wide subrack with a number of board positions for different func-
tions and interfaces. The MX-ONE Classic is based on the MGU board.
The MX-ONE Classic can optionally be equipped with an ASU or ASU
Lite.
This media gateway has the same interfaces as the MX-ONE Lite but
provides more slots for added functions (boards).
5.1.3.4 MGU Board, in MX-ONE Lite and MX-ONE Classic
The MGU is a device board to be inserted in a dedicated board position
in a 3U or 7U chassis/subrack. Unlike other device boards, this board is
required in the Media Gateway subrack, and only one can be inserted at
its dedicated board position. The key features of MGU includes:
• Device Board Interface. MGU intermediates all communication
between device boards in the 3U/7U chassis and the Telephony
Server.
• Digital trunks. MGU provides layer 1 and layer 2 for E1/T1. The
MGU board has 8 Primary Rate ISDN (E1/T1) interfaces. The MGU
also supports digital CAS, introduced in MX-ONE 5.0 SP4. To get
CAS with MFC, MFU/11 is added to MX-ONE Classic, or MX-ONE
Lite.
• Keycode Receiver. MGU provides Keycode Receivers (DTMF
receivers), intended for mobile extensions.
• Fax relay T.38. MGU provides relaying T.30 facsimiles (G3 fax)
to/from Internet Aware Faxes or Gateways using T.38 protocol.
• TDM switch for 512 time slots (replacing LSU-E and 2 DSUs).
MGU provides a non-blocking TDM switch for inter-connection of
circuit switched media.
• 256 gateway channels (replacing 8 IPLUs)
• Recorded Voice Announcements. MGU provides play out of
pre-recorded, locally stored, media files over TDM switch.
• VoIP. MGU provides RTP/SRTP including DTMF relay and
facsimile tones over RTP.
• Network Redundancy. The MGU supports two types of redun-
dancy.
• Subnet (IP) redundancy
• Switched (Ethernet) redundancy (Link Failover)
• For more information, please see the description for the MGU.