Chapter 4: Troubleshooting

IF YOU ARE UNABLE TO CONNECT CALLS

See Table 4-A for corrective actions if you cannot connect calls.

 

Table 4-A

 

Troubleshooting Calls

 

 

 

Condition

Corrective Action

 

 

 

 

The Loop LED remains on, but

Most likely a problem exists in the software setup (translation) at the

 

calls cannot be placed.

CO switch, or the network setup in the Express XL.

 

 

 

 

Local voice calls can be trans-

The line is probably not set up to support data calls.

 

mitted, but data calls to the

 

 

same exchange cannot.

 

 

 

 

 

Local data calls go through,

Ensure the far end is working. If not already doing so, place the call

 

but long distance data calls

explicitly specifying the prefix of the long distance service (for exam-

 

do not.

ple, 10288 for AT&T). If this does not work, then most likely the

 

 

problem is that the long distance service provider is not providing

 

 

long distance access.

 

 

 

 

Single B-channel calls can be

There is most likely a problem in the software setup (translation) at the

 

made, but two B-channel calls

CO switch, or the network setup in the Express XL.

 

cannot.

If the line has two phone numbers, make sure the second SPID and

 

 

 

 

LDN are entered correctly in SPID2 and LDN2 in the Express XL.

 

 

Check with the local service provider to ensure that the line supports

 

 

two data calls. The Express XL status log buffer shows what sequence

 

 

of events occurred. What you need to know is which piece of equip-

 

 

ment first caused the Multilink PPP process to terminate. The status

 

 

logs from both ends may be necessary to determine this.

 

 

 

 

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Express XL/XLT User Manual

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ADTRAN Express XLT user manual If YOU are Unable to Connect Calls, Troubleshooting Calls
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Express XLT, Express XL specifications

ADTRAN has established itself as a leading provider of telecommunications solutions, and among its impressive lineup, the ADTRAN Express XL and Express XLT stand out as robust offerings designed for the evolving demands of modern networks. These devices cater to service providers and enterprises looking to enhance their broadband delivery capabilities while ensuring cost-efficiency and reliability.

The ADTRAN Express XL is a high-capacity, next-generation fiber optic access platform. It is engineered to support a wide array of technologies, including Passive Optical Network (PON) standards such as GPON and XGSPON. The Express XL's architecture allows for seamless scalability, making it a perfect fit for both small-scale deployments and expansive network rollouts. What sets it apart is its ability to deliver ultra-fast broadband services to residential, business, and mobile backhaul customers with its impressive throughput capabilities.

On the other hand, the Express XLT builds upon the success of the Express XL by incorporating advanced features aimed at maximizing operational efficiency. It supports technologies including Active Ethernet and offers flexible network configurations to meet specific service requirements. Both models utilize ADTRAN’s innovative Dynamic Bandwidth Allocation technology, which dynamically allocates bandwidth to users based on real-time demand, ensuring optimal performance and user satisfaction.

A key characteristic of both ADTRAN Express XL and XLT is their energy efficiency. Designed to minimize operational costs, these units use power-saving technologies that reduce energy consumption without compromising performance. Furthermore, they include built-in support for network functions virtualization (NFV) and software-defined networking (SDN), providing operators with the agility to adapt their networks in response to changing market conditions.

In addition to their advanced technological underpinnings, the Express XL and XLT boast an intuitive management interface, simplifying network monitoring and management tasks. They also feature comprehensive telemetry and analytics capabilities that help operators gain insights into network performance, optimize configurations, and troubleshoot potential issues before they affect end users.

Ultimately, the ADTRAN Express XL and Express XLT are pivotal components for service providers aiming to deliver high-speed broadband services effectively. With their blend of flexibility, scalability, and energy efficiency, these access platforms are well-positioned to meet the current and future demands of telecommunications networks worldwide.
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