Keep on Trunking -
Business Voice Trunk
Business Voice Trunk
Known for its standard 1.544 Mbps bandwidth
T1
The comparison of the signal received at the headend from the customer's DOCSIS device to the noise floor
Signal to Noise Ration (SNR)
These are samples in time, not physical locations, in the plant
EQ Taps
When a wireless signal hits a smooth object and bounces off the surface
Reflection
550nm
Green
Consists of 23 B-Channels a 1 D-Channel
PRI Trunk
A measurement of the signal transmission level from the customer's DOCSIS device to the CMTS
Upstream Transmit
Measurement of signal amplitude (in ICFR chart) deviating up or down in .75dB increments
Ripples
When a signal passes through an object and the signal is redirected
Refraction
750nm
Visible Red Light
Type of Voice Trunking used by a Soft Switch
SIP
The signal measured at the CMTS from the customer's DOCSIS device
Upstream Receive Power Level
The reference carrier under test for a specification of +/-2.0dB
In-Channel Frequency Response (ICFR)
When an object takes in the signal and retains some or all of it
Absorption
1310nm
Infared
CCS
Concurrent Call Sessions
Technique used to keep upstream energy separate from downstream energy
Frequency Division Multiplexing
The boundaries in the coaxial plant that can help to determine where faults, impedance mismatches are located
Reflection Points of the (?)
This is caused by the signal hitting an uneven surface and is reflected in many different directions
Scattering
480nm
Blue
ISDN
Integrated Services Digital Network
Active devices employ this to establish a clear path between the upstream and downstream energy
Diplex Filter
Type of distortion most often caused by external interference or ingress
Non-Linear Distortion
When overlaying access points use the same channel or channels with overlapping frequencies causing connectivity issues for customers
Co-Channel Interference
455nm
Violet