Echo canceller delivers best-in-class voice quality

8 November 2000 Telecoms, Datacoms, Wireless, IoT

Mitel Semiconductor has released a voice echo canceller that meets the latest ITU-T G.168 requirements for voice quality in converged telecommunications networks. The MT9300B is a 32-channel device that uses an advanced algorithm to remove echoes in telecommunicatins networks. This ensures clear and reliable delivery of voice and data in applications such as Voice over Internet Protocol (VolP) network gateways, Voice Telephony over ATM (VtoA), Voice over Frame Relay (VoFR), T1/E1 multichannel echo cancellation pools, and wireless basestations.

The MT9300B has 32 echo cancellers divided into 16 groups of two each, which can be configured in normal, extended delay or back-to-back organisations. Each group is individually controllable to provide either two channels at 64 ms or one channel at 128 ms. This allows service providers to address several customers with the same device by programming appropriate echo tails at different price/performance points.

Power consumption is minimised, as the device required only 3,3 V inputs, and is equipped with power management capability that allows individual groups of echo cancellers to be powered down when not in use.

The ITU-T recently added new requirements to the G.168 specification to elevate QoS in multiservice networks. The MT9300B complies with this enhanced specification, using a state-of-the-art algorithm to remove residual echoes, and also to inject comfort noise that masks audible switching effects caused when background noise is eliminated, resulting in superior voice quality.

Further reading:

What does Wi-Fi 7 mean for South African networks?
Telecoms, Datacoms, Wireless, IoT
With Wi-Fi 7 (802.11be), we are finally looking at a standard that was built, not just for more devices, but for the new way networks are used.

Read more...

---

Multiprotocol wireless SoC
RF Design Telecoms, Datacoms, Wireless, IoT
The nRF54LM20A from Nordic Semiconductor is a multiprotocol wireless System-on-Chip designed for demanding designs in Bluetooth devices.

Read more...

---

High performance communication
iCorp Technologies Telecoms, Datacoms, Wireless, IoT
Quectel’s FCS950R is a high-performance Wi-Fi 5 and Bluetooth 4.2 module that can deliver a maximum data rate up to 433,3 Mbps in 802.11ac mode.

Read more...

---

Expanded STM32WL3x line for IoT sensors
Altron Arrow Telecoms, Datacoms, Wireless, IoT
The STM32WL31x and STM32WL30x are more tailored versions of the STM32WL33x for designers who wish to focus on specific features, while lowering their bill of materials.

Read more...

---

Full-band GNSS helical antenna
RF Design Telecoms, Datacoms, Wireless, IoT
A key feature of Calian’s HC3990XF antenna design is that it does not require a ground plane, making it ideal for size-constrained applications.

Read more...

---

BLE and BT Mesh module
iCorp Technologies Telecoms, Datacoms, Wireless, IoT
The HM-BT4531 from HOPERF is a BLE data transmission module that features an ARM Cortex-M0 32-bit processor.

Read more...

---

Espressif entering the Wi-Fi 6E market
iCorp Technologies Telecoms, Datacoms, Wireless, IoT
Espressif Systems is entering the Wi-Fi 6E market, extending its connectivity portfolio into the domain of high-throughput, low-latency wireless solutions.

Read more...

---

Ultra-low jitter clock buffers
Altron Arrow Telecoms, Datacoms, Wireless, IoT
New SKY53510/80/40 family of clock fanout buffers from Skyworks are purpose-built for data centres, wireless networks, and PCIe Gen 7 applications.

Read more...

---

Cutting-edge broadband power amplifier
RFiber Solutions Telecoms, Datacoms, Wireless, IoT
Designed for high efficiency and reliability, the WPGM0206012M from WAVEPIA is a cutting-edge broadband GaN MMIC power amplifier operating from 500 MHz to 8,5 GHz.

Read more...

---

The trends driving uptake of IoT Platform as a Service
Trinity IoT Editor's Choice Telecoms, Datacoms, Wireless, IoT
IoT platforms, delivered as a service, are the key that will enable enterprises to leverage a number of growing trends within the IT space, and access a range of benefits that will help them grow their businesses.

Read more...

---