Source: GL Communications Inc.
Telecom test and measurement solutions developer GL Communications Inc. has announced its Echo Mitigation System (EMS) software that can be deployed on the backhaul systems to eliminate the varying delay/echo resulting from different backhaul technologies used to transport audio through the system.
Company CEO Vijay Kulkarni said, “Variations in delay can potentially cause gaps in the speech. The greater the time discrepancy between audio signals, the more difficult to understand the message. The Echo Mitigation System (EMS) by GL Communications can be deployed on the backhaul system to eliminate the delay/echo.”
He added, “The EMS solution allows for the measurement of delay from each site of a group of radio sites as well as the application of offsetting delays to mitigate the echo impairment."
"During the echo mitigation process, a user configurable delay is applied to each DS-0 in each T1 for east and west directions (48 DS0s / per duplex T1) and each DS-0 may be configured with its own delay parameter. This helps to synchronize inbound and outbound audio delivered to end users (or dispatch operators). For example, in an Octal T1 system, all 192 DS0s / all T1s (8 T1s) can be applied user configurable delays.”
“When a carrier provided DS0 circuit is placed into loopback at a remote site, the system will be able to initiate a circuit delay test on that DS0," Mr. Kulkani explained. "EMS software performs round-trip delay measurements. One-way delay measurement is available using companion equipment. This measurement will facilitate the configuration of the circuit delays required to bring the audio signals into sync. The EMS software contains a configuration utility through which users specify delay values. EMS functionality can be enabled or disabled at both DS1 and DS0 levels.”
GL has related applications that allows applying delay, attenuation or filtering to a received signal on any number of timeslots, or apply delay, attenuation (gain) or filtering to a received signal on a single timeslot and measure and display loop delay and echo return loss (ERL) on one or more timeslots.
