Synchronous Transport Mode is used in telecommunications networks throughout Europe, Asia, South America, Africa and Middle East. The optical interface allows transmission of lower rate such as PDH signals at synchronous rate with flexibility of allowing multiple vendors’ equipment to be compatible in the same span.
The TXO repair centre has various Marconi SMA setups for SMA Series 1.1D, SMA series 3 and STM 16. These are ADMs ( Add / Drop Multiplexer) using SDH. The ADM is the fundamental part of the SDH network. It is used to add and drop tributaries without demultiplexing the entire SDH signal. They are extracted/inserted by means of software control.
Our in-house capability to screen and repair for range of power supply units, system memory cards, Mux controllers cards, switch cards, link cards, router cards, tributary cards, and optical interface cards for STM-1, STM-4 and STM-16 systems as listed below. Repair can be an attractive and cost-effective option for telecom operators using such legacy systems where spare parts are no longer available.

Example Marconi STM-1 Cards that can be repaired at the TXO repair centre
PART CODE | DESCRIPTION |
1HAT60592ACB | STM-1 ELECTRICAL CARD |
1HAT60592ADT | STM-1 ELECTRICAL CARD |
1HAT60000KAN | STM-1 Optical Interface card |
1HAT60585CBT | SWITCH CARD |
1HAK60550AAF | POWER SUPPLY UNIT |
1HBA60568AAP | SYSTEM MEMORY CARD |
Example Marconi STM-4 Cards that can be repaired at the TXO repair centre
PART CODE | DESCRIPTION |
1HAG60558AAM | SUBRACK |
1HAK60550BAC | POWER SUPPLY UNIT |
1HAK60637AAW | SWITCH LINK CARD |
1HAT60680ABV | SWITCH ROUTER CARD |
1HAT60704AAW | MUX CONTROLLER CARD |
1HBA60622AAW | SYSTEM MEMORY CARD |
1HBA60568AAP | SYSTEM MEMORY CARD |
1HAT60696AAG | STM-4 OPTICAL INTERFACE CARD |
1HAT60692ABQ | STM-4 OPTICAL INTERFACE CARD |
Example Marconi STM-16 Cards that can be repaired at the TXO repair centre
PART CODE | DESCRIPTION |
1HAG60527AFB | SUBRACK |
1HAK60550AAF | POWER SUPPLY UNIT |
1HAK6050AEA | POWER SUPPLY UNIT |
1HAT60586ADM | MUX CONTROLLER CARD |
1HAT60585CBT | SWITCH LINK CARD |
1HAT60581ABR | ROUTER LINK CARD |
1HAT60593ABL | MUX CONTROLLER CARD |
1HAT60580ACG | LINK CARD |
1HAK60701AAU | SMT-16 TX OPTICAL TRANSMIT INTERFACE CARD |
1HAK60596AJT | STM-16 RX OPTICAL RECEIVE INTERFACE CARD |
1HAK60573CBD | STM-16 TX OPTICAL TRANSMIT INTERFACE CARD |
1HAT60623ABL | 45M LTU TRIBUTARY UNIT |
1HAT60623BAQ | 45M TRIBUTARY CARD |
1HAM60797AAT | 45M LTU TRIBUTARY UNIT |
1HAM60796AAR | 34M LTU TRIBUTARY UNIT |
To discuss your needs for repair equipment belonging to Marconi SMA systems please contact us.
TXO has no formal affiliation with Ericsson in relation to repair services.