See Figure 5 and Figure 6 for switchover codes and traffic results.

8. SWITCHBACK

Switchback operation is defined as the re-establishment of the T1 transmission path between the network and the customer using the regularly assigned line. Communication between the COE and RE will be based upon in-band or out-of-band (ESF datalink) commands.

Switchback Receive Path

Remote

Switchback operation is accomplished by sending a specific sequence of SF in-band patterns or ESF datalink messages over the standby line.

NOTE

Communication using in-band codes will override the customer’s data during the switchback operation. The customer’s data will be overridden for 10 seconds. These remote provisioning commands are transmitted to the controller card from a remote test facility or a T1 test set at a DSX panel.

Local

Depressing S2 on the SCIM card for a minimum 5 seconds resets the protect configuration in memory.

CENTRAL OFFICE

 

 

Office

 

 

Repeater

 

DSX-1

Bay

 

 

Office Repeater

 

< Live Traffic >

or

< Live Traffic >

DCS

HTU-C

T1 / HDSL / HDSL2

 

< Acknowledge

Office Repeater

 

 

or

 

Switch Code >

HTU-C

Switch Codes >

 

 

 

 

WECO D4

 

 

WESCOM 3192

 

TEST

 

 

CUSTOMER PREMISES

DTWA

NIU CIM

Main

CPE

Standby

PROTECT OPERATION

Figure 5. Protect Operation

CENTRAL OFFICE

CUSTOMER PREMISES

 

Office

 

DTWA

 

Repeater

 

DSX-1

Bay

NIU

CIM

DCS

 

Office Repeater

Main

CPE

 

 

 

or

 

 

HTU-C

T1 / HDSL / HDSL2

 

 

 

 

 

Office Repeater

Standby

< Live Traffic >

or

< Live Traffic >

 

 

HTU-C

 

 

 

WECO D4

 

 

 

WESCOM 3192

 

 

TEST

 

 

 

 

 

SWITCHOVER

 

Figure 6. Switchover

10

Section 61190860L1-5, Issue 2

61190860L1-5B

Page 10
Image 10
ADTRAN 1xN specifications Switchback Receive Path

1xN specifications

ADTRAN 1xN is a significant innovation in the realm of broadband network technology, designed to enhance the capacity and efficiency of data transmission in various communications infrastructures. This technology is particularly beneficial for service providers looking to upgrade their existing networks in an economically viable manner.

One of the primary features of ADTRAN 1xN is its ability to support multiple optical network terminals (ONT) from a single fiber source, which drastically reduces the amount of infrastructure required for deployment. This one-to-Many approach allows network operators to extend their service reach while minimizing the cost associated with laying down extensive fiber networks.

ADTRAN 1xN utilizes both Passive Optical Network (PON) and Active Optical Network (AON) technologies. The PON technology grants high-speed data transmission rates, accommodating several service tiers and customer demands, while the AON provides enhanced flexibility and control over data flows for network administrators. This dual-faceted approach enables operators to choose the best deployment strategy to meet specific user needs, whether in residential, commercial, or enterprise environments.

Another characteristic of this technology is its scalability. Providers can easily integrate ADTRAN 1xN into existing networks without needing extensive overhauls, allowing for easy upgrades as customer demand for service increases. This feature ensures that investments in infrastructure remain relevant and capable of handling increased data loads over time.

Additionally, ADTRAN 1xN offers robust support for various applications, including Voice over Internet Protocol (VoIP), streaming media, and cloud computing solutions. The network’s architecture effectively prioritizes data traffic to ensure quality of service, critical for users relying on real-time communications.

ADTRAN also emphasizes energy efficiency in its 1xN solutions, aligning with global sustainability initiatives. By minimizing power consumption while maximizing performance, ADTRAN not only meets operational needs but also helps service providers lower their overall environmental impact.

In conclusion, ADTRAN 1xN stands out as an inventive and flexible solution for modern broadband service providers. With its combination of advanced optical technologies, scalability, extensive application support, and commitment to energy efficiency, it represents a significant advancement in delivering high-quality, reliable internet connectivity.