UIM implements function of managing control shelf, Level-2 switching and control shelf inside level-1 switching shelf. Also, UIM provides external interfaces to control shelf and level-1 switching shelf. These interfaces include packet data interfaces (GE optical interfaces) connecting with core switching units and control panel data Ethernet interfaces (4 FE) of distributed processing platform.
The UIM board in the MGW can be used as the UIMC, UIMU, UIMP and UIMT boards.
Following are functions of UIMC board:
UIMC provides two 24+2 switched HUBs. One is the control
plane Ethernet HUB, and the other is the user plane Ethernet HUB. The control plane Ethernet HUB and the user plane Ethernet HUB provide 10 external control plane FE interfaces for interconnection between control planes in the shelf through the GE interconnection mode.
UIMC provides one external user plane GE interface to
cascade the CHUB in the control shelf.
Internal FE ports on two hot active/standby boards and
8MHW use high resistance multiplexed mode for backup on the backboard.
UIMC provides functions such as reading the cabinet number,
shelf number, slot number, equipment number, and backboard version number.
UIMC provides the internal RS-485 management interface DIP Switches,
Jumpers Technical Indices Backboard Precautions
Overview Functions of
the UIMC board
Chapter 3 MGW Boards
UIMC also provides MAC configuration, VLAN and broadcast
packet control functions.
UIMC can be compatible with the commercial HUB.
Following are functions of UIMP board:
UIMP provides two 24+2 switched HUBs. One is the control
plane Ethernet HUB, and the other is the user plane Ethernet HUB. The control plane HUB provides 20 internal control plane FE interfaces to interconnect with the boards of the resource shelf, and also provides 4 external control plane FE interfaces that are used between resource shelves or for interconnection between the resource shelf and the CHUB. The user plane HUB provides 23 internal FE to interconnect resource shelves and one external FE.
UIMP provides one external user plane GE optical interface to
interconnect the resource shelf and the core switching units by matching GXS daughter cards. The GE channel adopts active/standby dual channel backup mode to provide 1+1 backup for core switching units.
UIMP provides one or two user plane GE interfaces and
provides 1-2 GE slots for the resource shelf.
UIMP implements resource shelf access to 16K timeslot of
circuit switching units through two pairs of external optical fibers. UIMP also implements 8M to 32M multiplexing of 16K timeslot. Multiplexing of UIMP uses inter-shelf insertion, and provides 128 8M HWs to the resource shelf.
Internal FE ports on two hot active/standby boards and
8MHW use high resistance multiplexed mode for backup on the backboard.
UIMP provides functions such as reading the cabinet number,
shelf number, slot number, equipment number, and backboard version number.
UIMP provides the internal RS-485 management interface
and board reset and reset signal collection function.
UIMP provides clock-driven function inside the resource shelf.
After phase lock and drive, input PP2S, 8K, 16M signals are distributed to various slots of the resource shelf. It provides 16M, 8K and PP2S clocks for the resource boards.
UIMP also provides MAC configuration, VLAN and broadcast
packet control functions.
UIMP can be compatible with the commercial HUB.
Following are functions of UIMU board:
UIMP provides two 24+2 switched HUBs. One is the control
plane Ethernet HUB, and the other is the user plane Ethernet
Confidential and Proprietary Information of ZTE CORPORATION 95
Functions of the UIMP board Functions of the UIMU board
ZXWN MGW Media Gateway Hardware Description
HUB. The control plane HUB provides 20 internal control plane FE interfaces to interconnect with the boards of the resource shelf, and also provides 4 external control plane FE interfaces that are used between resource shelves or for interconnection between the resource shelf and the CHUB. The user plane HUB provides 23 internal FE to interconnect resource shelves and one external FE.
UIMU provides one or two user plane GE interfaces and
provides 1-2 GE slots for the resource shelf.
UIMU can provide the 16K circuit switching function within
the resource shelf. This function cannot coexist with the external multiplexing function on the UIMT board. These two functions are selected through inserting different daughter cards and selecting the welding methods.
Internal FE ports on two hot active/standby boards and
8MHW use high resistance multiplexed mode for backup on the backboard.
UIMU provides functions such as reading the cabinet number,
shelf number, slot number, equipment number, and backboard version number.
UIMU provides the internal RS-485 management interface
and board reset and reset signal collection function.
UIMU provides clock-driven function inside the resource
shelf. After phase lock and drive, input PP2S, 8K, 16M signals are distributed to various slots of the resource shelf. It provides 16M, 8K and PP2S clocks for the resource boards.
UIMU also provides MAC configuration, VLAN and broadcast
packet control functions.
UIMU can be compatible with the commercial HUB.
Following are functions of UIMT board:
UIMT provides two 24+2 switched HUBs. One is the control
plane Ethernet HUB, and the other is the user plane Ethernet HUB. The control plane HUB provides 20 internal control plane FE interfaces to interconnect with the boards of the resource shelf, and also provides 4 external control plane FE interfaces that are used between resource shelves or for interconnection between the resource shelf and the CHUB. The user plane HUB provides 23 internal FE to interconnect resource shelves and one external FE.
Functions of the UIMT board
Chapter 3 MGW Boards
UIMT provides one or two user plane GE interfaces and
provides 1-2 GE slots for the resource shelf.
UIMT implements resource shelf access to 16K timeslot of
circuit switching units through two pairs of external optical fibers. UIMT also implements 8M to 32M multiplexing of 16K timeslot. Multiplexing of UIMT uses inter-shelf insertion, and provides 128 8M HWs to the resource shelf.
Internal FE ports on two hot active/standby boards and
8MHW use high resistance multiplexed mode for backup on the backboard.
UIMT provides functions such as reading the cabinet number,
shelf number, slot number, equipment number, and backboard version number.
UIMT provides the internal RS-485 management interface
and board reset and reset signal collection function.
UIMT provides clock-driven function inside the resource shelf.
After phase lock and drive, input PP2S, 8K, 16M signals are distributed to various slots of the resource shelf. It provides 16M, 8K and PP2S clocks for the resource boards.
UIMT also provides MAC configuration, VLAN and broadcast
packet control functions.
UIMT can be compatible with the commercial HUB.
Figure 61 shows working principle of UIM board.
FI G U R E 6 1 U IM BO A R D WO R K I N G PR I N C I P L E
Confidential and Proprietary Information of ZTE CORPORATION 97
Working Principle
ZXWN MGW Media Gateway Hardware Description
UIM can serve as functional boards such as UIM, UIMU, UIMP and UIMT, depending on the configuration requirement of MGW system. Figure 62 shows the panels of UIM, UIMU, UIMT and UIMP.
Chapter 3 MGW Boards FI G U R E 6 2 PA N E L S O F U I M , U I M U , U I M T A N D U I M P LINK6 LINK5 LINK9 LINK10 LINK8 LINK7 SD2 SD1 1 TX RX TX 2 LINK4 ACT2 RX LINK3 LINK4 ACT1 LINK3 RST RST LINK2 ACT-T ACT-P LINK2 LINK1 LINK1 ALM RUN EXCH ACT ALM ACT EXCH ENUM RUN ENUM
UIMC UIMU TX TX SD4 RX SD3 RX SD2 SD1 SD2 SD1 LINK4 ACT2 1 RX 2 TX TX RX ACT1 ACT2 LINK3 LINK4 ACT1 LINK3 1 RX 2 TX TX RX ALM RUN RST EXCH LINK2 RST ACT-PACT-T LINK1 LINK2 LINK1
ACT ACT ALM
EXCH ENUM RUN ENUM
UIMP UIMT
ZXWN MGW Media Gateway Hardware Description
Table 50 shows indicators of UIM board. There are total 14 indicators in UIM board.
TA B L E 5 0 IN D I C A T O R S O F U IM B O A R D
Indicator Color Indication Description
RUN Green Run indicator
Flashing at 5Hz: Board is in power on status.
Flashing at 1Hz: Board runs normally.
ACT Green Active/standby indicator
On: Board is active. Off: Board is standby.
ALM Red Alarm
indicator
On: An alarm exists on board. Off: No alarm exists on board
ENUM Yellow Board extraction Indicator
When board inserts into a slot, by default ENUM indicator is on. When software detects ENUM signal and finds that extractor is closed, ENUM indicator turns off to indicate the system to work.
LINK1 to LINK10 Green Status indicator of control plane cascade interface
ON: Control plane cascade 100M interface 1 is connected. OFF: Control plane cascade 100M interface 1 is not connected. ACT1–2 Green Status indicator of GE interface 1
For indicating the currently activated optical interface
SD1–4 Green Optical signal indicator of GE interface 1
For indicating whether the optical board has received optical signals.
Table 51 shows list of buttons on UIM board.
TA B L E 5 1 BU T T O N S I N U IM B O A R D
Button Name Description
Perform active/standby
Chapter 3 MGW Boards
FI G U R E 6 3 U IM LA Y O U T
GCS/ GXS/ GTS SubCard
CPU SubCard
There is no a DIP switch or jumper on UIM board.
Table 52 shows external interfaces of UIM board.
TA B L E 5 2 E X T E R N A L IN T E R F A C E S O F U I M B O A R D
Interface
Two sets of 24*100M Ethernet interface 1 to 2 GE interfaces
UIM provides two sets of 24*100M Ethernet switching.
When the UIM board is used as the UIMC board, the corresponding backboards are RUIM2 and RUIM3. The RUIM2 is inserted to the slot 9, and the RUIM3 is inserted to the slot 10. Figure 64 shows the panels of RUIM2 and RUIM3.
Confidential and Proprietary Information of ZTE CORPORATION 101
DIP Switches
and Jumpers InterfacesExternal Technical Index Backboards of the UIMC
ZXWN MGW Media Gateway Hardware Description
FI G U R E 6 4 PA N E L S O F R U I M 2 A N D R U IM 3
The RUIM2 and RUIM3 boards provide the following interfaces:
FE1~FE10 (RJ45 interface): The RUIM2 and RUIM3 boards
provide 10 FE interfaces for the interconnection between the control panels of the shelf.
Chapter 3 MGW Boards
DEBUG (RJ45 interface): used for debugging and providing no service functions.
When the UIM board is used as the UIMU, UIMT or UIMP board, the corresponding backboard is RUIM1. Figure 64 shows the panel of RUIM1.
Confidential and Proprietary Information of ZTE CORPORATION 103
Backboards of the UIMU, UIMT and UIMP Boards
ZXWN MGW Media Gateway Hardware Description
FI G U R E 6 5 PA N E L O F R U IM 1
The RUIM1 board provides the following interfaces:
Interface Description
Chapter 3 MGW Boards
FE-U (RJ45 interface): used for debugging and providing no
service functions.
CLKIN (DB9 interface): The CLKIN interfaces on the RUIM1
board can introduce two lines of active/standby 8K system clock output by the CLKG board.
Strictly observe operation regulations to prevent electrostatic damage to large scale integrated circuits on the board.