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Serial Terminal Server Case Study for Telecom: Silver Star Communications

How a regional telco in Wyoming cut emergency site visits to zero


Cisco ONS 15454, AdTran 2820 Mux, Calix C7 communicating via TL1 through a NetGuardian 832A to a T/Mon hardware platform running the ASCII processor software module
Silver Star Communications has established a sophisticated TL1 forwarding and processing system that enables them to remotely access important equipment when the LAN is down - eliminating expensive truck rolls that waste hours of a technician's time.

FieldDetails
IndustryTelecom / Broadband Provider
Company TypeRegional telephone and broadband company
Geography/CoverageEastern Idaho and Northwestern Wyoming
Primary ChallengeNo remote device access during LAN outages
Solution DeployedNetGuardian 832A serial terminal server
Key ResultEliminated 90-minute round-trip truck rolls
Products UsedNetGuardian 832A, T/Mon master station with ASCII processor

About Silver Star Communications

Silver Star Communications has served Star Valley, Wyoming for over 60 years. What started as a family telephone company has grown into a full-scale technology provider, delivering communications and broadband services across Eastern Idaho and Northwestern Wyoming.

The Challenge

When the LAN went down at a remote site, Silver Star's technicians had no way to access network equipment remotely. The only option was to drive out. With an average round-trip of 90 minutes per site, every LAN failure meant pulling a technician away from other work for the better part of two hours.

"Before we had the NetGuardians, we didn't have connectivity to our devices when LAN failed. We had to drive out to the site." - Jim Eddins, Central Office Technician, Silver Star Communications

The Solution

Silver Star deployed NetGuardian 832A units as a redundant serial access path at approximately 12 remote sites. The NetGuardian's built-in serial terminal server gives technicians a secondary route into network equipment when the primary LAN connection is unavailable. This backup access runs through the serial ports on the back of each unit.

Products & Services Deployed

  • NetGuardian 832A (serial terminal server)
  • T/Mon master station with ASCII processor
  • TL1 forwarding for connected equipment

Connected equipment includes Calix C7, AdTran 2820 muxes, Cisco ONS 15454, SONET gear, door alarms, generators, and temperature sensors. All of it is accessible through the serial pass-through when LAN fails.

The Results

With NetGuardian 832A units in place, Silver Star's technicians can reach critical network equipment remotely even when LAN is down. What used to require a 90-minute round-trip drive is now handled from the office, saving time and keeping technicians available for other work across the network.

MetricResult
Truck Rolls EliminatedRemote LAN-failure access at approximately 12 sites
Time Saved Per IncidentUp to 90 minutes of drive time avoided
Sites Monitored RemotelyApproximately 12 remote hut locations
"If our LAN disappears, we can get into our equipment through the terminal server serial ports on the back of the NetGuardian. It's a back door for us to get in there, and we use that quite a bit." - Jim Eddins, Central Office Technician, Silver Star Communications

What This Deployment Made Possible

TitleDescription
LAN-Failure AccessThe serial terminal server provides a backup path into equipment whenever LAN goes down.
Fewer Truck RollsRemote troubleshooting replaces 90-minute round trips to the site.
Broader Site CoverageApproximately 12 remote locations are now monitored and accessible from the office.
Tuition-Free TrainingFactory Training at DPS helped Silver Star expand use of ASCII and SNMP tools.

Products Used in This Solution

ProductDescription
NetGuardian 832AVersatile RTU with built-in serial terminal server for backup site access during LAN failures.
T/Mon Master StationMulti-protocol alarm master that processes TL1 and ASCII alarm data from remote sites.

Common Questions About Telecom LAN Monitoring

What happens to network access when LAN goes down?

Without a backup access path, a LAN failure at a remote site means technicians can't reach equipment remotely. The only option is a physical site visit. DPS NetGuardian RTUs solve this with a built-in serial terminal server. When LAN fails, technicians can still connect to equipment via the serial ports on the NetGuardian, accessing devices like muxes, SONET gear, and routers without leaving the office.

How does a serial terminal server work as backup access?

A serial terminal server provides a separate communication path by connecting physical serial ports on your network equipment to an IP network. The NetGuardian 832A includes this capability built in. When LAN is unavailable, technicians use NetGuardian's serial pass-through to establish a session with connected devices. The LAN path and serial path operate independently, so a failure in one doesn't affect the other.

What equipment can be reached through the serial terminal server?

Any equipment with a serial port can be accessed this way. At Silver Star, this includes DLCs like the Calix C7, AdTran 2820 muxes, Cisco ONS 15454 SONET gear, HDSL equipment, door alarms, generators, and temperature sensors. Essentially any device that supports serial communication can be monitored and accessed through NetGuardian's terminal server ports.

Does DPS offer training on how to use these features?

Yes. DPS offers multi-day Factory Training seminars at its Fresno, California headquarters. Sessions cover alarm management fundamentals, ASCII processing, SNMP, and hands-on configuration of T/Mon and NetGuardian equipment. Silver Star's technicians attended training specifically to learn the ASCII module and explore newer T/Mon platform features. Training is included with your purchase.

See What This Looks Like for Your Network

If LAN failures are sending your technicians on unnecessary site visits, we can help. Talk to a DPS engineer about adding backup serial access to your remote sites.

Talk to a DPS Engineer

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