Understanding the Demarc Extension – A Facility’s Most Critical Cabling Channel Dennis Mazaris, RCDD President, Concert Technologies
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Understanding the Demarc Extension –A Facility’s Most Critical Cabling Channel
Dennis Mazaris, RCDDPresident, Concert Technologies
Loss of Single Connection
Loss of Demarc Extension Connection
What Is a Demarc Extension?The transmission path originating from the interface of the access provider’s side of a telecommunications circuit Demarcation Point within a premise and ending at the termination point prior to the interface of the edge Customer Premises Equipment.
This may include in-segment equipment, media converters and patch cords as required to complete the circuit’s transmission path to the edge CPE.
Demarc Extension Timeline
Loss of Standardization
“Like most deregulation efforts, that of the CO-OSP also contains several drawbacks. One is the loss of the standardization that was maintained by the Service Providers (SPs) prior to deregulation. This problem has been and continues to be addressed…”
BICSI Customer-Owned Outside Plant Design Manual
Telecommunications Industry Association. (2009). Commercial Building Telecommunications Cabling Standard, ANSI/TIA-568-C.1-2009. Arlington, VA: TIA.
Commercial Building Telecommunications Cabling Standard
Who is Involved?End User/Subscriber
Carrier
Local Access Provider
Master Agent, Sub-Agent
Solution Provider
IP TechnologyWAN
Security
Life Safety
Video Conferencing
VOIP
Energy Controls
UnifiedCommunications
Cloud Computing
What the Customer Wants
Larger Pipes or More Circuits
Department Control
Redundancy
Easy Fault Isolation
Less Finger Pointing
Circuit Type Cable Type Distance
Limit SpeedHandOff
Connector Type
T12 Pair STP
4 Pair UTP*
655 Ft1.544 Mbps
Smart JackCX
RJ 48X or 8 pin mod plug
DS3 DS3 Dual COAX 440 Ft
44.763 Mbps(28 T-1)
BNCPanel
BNC or 440
OC3FiberSingle Mode
Unlimited for premise
155 Mbps(100 T-1)
FiberPanel
SC,LC,ST,FC
Labeling
Mechanically or Permanent MarkerLocal Access Provider’s ID#Carrier ID#CX, Interconnections, Intraconnections
Minimum Vendor Cable ID#Cross Over Cables
Problems to InstallAccess
Tag & Locate
Congested Pathways
Core Hole
Fire Stopped
Capacity
Testing of the Demarc Pre-Wire
T1 Pair Tester Field Tester with Store and Print
DS3 Coax Tester Field Tester with Store and Print
OC3 Light Source & Power Meter
Field Tester with Store and Print
Low Level High Level
High Level Circuit Testing
Training Cost
Low Level Testing
1 1 0 1 0 1 1
1 1 0 1 0 1 1 1 1 0 1 0 1 1
No Loop
Demarc
Local Loop
Local Loop
T1 Loopback PlugDS3
Patch Cable
OC3
Patch Cable
Warranty
Turnover of Circuit
30, 60, 90 Days
One Year
Must Confirm
SummaryMultiple Entities InvolvedEstablish a Set of Installation StandardsIP Technology Causing A Growth ofCircuitsLabeling - Carrier ID#, AP ID#Avoid Finger Pointing
Test at the Demarcation Point
Resources
Demarc Extension Nationwidewww.demarcextension.com
Dennis Mazaris, RCDDPresident, Concert Technologies [email protected]
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