What is STM-1 and STM4?

The STM-1 (Synchronous Transport Module level-1) is the SDH ITU-T fiber optic network transmission standard. It has a bit rate of 155.52 Mbit/s. Higher levels go up by a factor of 4 at a time: the other currently supported levels are STM-4, STM-16, STM-64 and STM-256.

How many VC4 are in STM-16?

By using the STM-16 Aggregate unit, the add and drop capacity of a node can grow as required in modular steps of virtual containers (VC-12, VC-3, VC-4, VC-4-4c), up to the full STM-16 SDH payload. The unit has five configurable bandwidth (CBW) service distribution ports.

How many VC4 are there in STM-4?

Gigabit Ethernet over SDH (STM-4) Converters 7041 and G. 7042 EoSDH (Ethernet over SDH) technology. All VC4 / STM-1 (1~8) are user configurable and may be mapped to a single VCG (single Ethernet Port), when both STM-4 interfaces are independent. 3 x Gigabit Ethernet interfaces can share up to 1112Mbps (8 VC4).

What is the capacity of STM-4?

SDH uses basic digit rate of 155.52 Mbps and multiples of this by factors of 4*n. This basic SDH signal is called “d which include STM4, STM16, STM64 and STM256.

What is channelized STM-1?

Each Channelized STM1 PIC and Channelized STM1 Intelligent Queuing (IQ) PIC has one STM1 port. For the Channelized STM1 IQ or IQE PIC, you can channelize the single port to the N xDS0 level. Each E1 interface has 32 time slots (DS0), in which time slot 0 is reserved.

What is RSOH in SDH?

In synchronous transfer mode( STM), the Regenerator Section Overhead (RSOH) is a data field that precedes the pointer in the STM data frame.

What is E1 in telecom?

E1 is the European variant of T1. It was defined by the European Conference of Postal and Telecommunications Administrations and provides for a link speed of 2.048 Mbps. This enables each user channel to have 64 Kbps of usable bandwidth. E1 links can simultaneously carry 32 voice calls.

What is the capacity of STM-1?

SDH01A-TM is an SDH based, STM-1 Fiber Terminal Multiplexer with a total bandwidth capacity of 155Mbps (63E1). The Terminal Node Multiplexer provides a full Cross-Connect platform for the 63 E1 channels.

How many e1s are there in 1 STM?

63
STM-1 Fiber Optic Port

Physical/Electrical
E1 interface connector	RJ-45
Optical Interface connector	FC or SC
Number of Optical STM-1 Ports	1 or 2 (second for protection)
Number of E1 channels	63