The Nortel TN-16X is a legacy SDH system. SDH is utilised whereby payloads of a transmission system are synchronised by a master network clock.  The TN-16X system is for STM-16 ( 2488 Mbps). It is used as backbone for regional and national SDH networks and often in conjunction with Nortel LH DWDM. The tributaries can be 34 Mbps, 40Mbps, STM-1 electrical, STM-1 optical and STM-4 Optical. It was used in point to point, repeater and ring configurations. The Ring topology is for ring protection in case of network break. This type of resilience was and is one of the main advantages of SDH for the Operator. In Nortel terminology the the element controller card is known as the OPC.  The MMX repair centre has the Ring and Line shelf available with the Regen shelf in development. These reference systems are used to support the Nortel TN-16X repair process.

Nortel TN-16X Repair
The Nortel TN-16 Ring Shelf in the MMX Repair centre

 

MMX is able to test, screen and repair to circuit board level cards belonging to the Nortel TN-16X SDH system. Our repair centre is equipped with the the Line and Ring Shelves for fault finding and post repair confirmatory testing, this includes traffic test.

Example Part Codes from the Nortel TN-16X that the MMX Repair Centre is able to Repair

 

Part Code Description
NT7E19AA ESI CARRIER (TN-16X)
NT7E20GD FDN2400 OC-48 PROCR
NT7E24BC OPC (TN-16X)
NTFW08AA STM-1E TRIBUTARY (TN-16X)
NTFW15AA SWITCHER (TN-16X)
NTFW18AA SWITCH CONTROL UNIT (TN-16X)
NTFW21AB NTFW21AB
NTFW27AA TN-16X 2 MHZ EXTERNAL SYNC INT
NTFW56BA POWER ACCESS / ALARM PANEL (TN
NTFW39CE NTFW39CE
NTFW19BA STM-1O INTERFACE CARRIER (TN-1
NTFW01AB STM 16 LR 1557 RING TX FC/PC
NTFW01FB STM-16 LR
NTFW03AB STM16 LR 1557 Regen Tx (FC)

 

To discuss your needs for repair of cards and equipment belonging to the Nortel TN-16X now Ciena system please contact us.

MMX has no formal affiliation with Ciena in relation to repair services.

 

Return to MMX repair capability page.