C456HD Specifications

The following tables summarize the phone's specifications.:

■

Functional Features

■

Hardware

■

C456HD Part Names

Functional Features

Feature

Details

Media processing

■

Voice Coders: G.711 codec PCMA (A-Law), G.711 codec PCMU (μ-Law), G.722

■

Acoustic Echo Cancelation: G.168-2004 compliant, 64-msec tail length

■

Ambient noise block

■

Adaptive Jitter Buffer

■

Voice Activity Detection

■

Comfort Noise Generation

■

Packet Lost Concealment

■

RTP/RTCP Packetization (RFC 3550, RFC 3551), SRTP (RFC 3711)

Microsoft Teams phones
feature set

■

Authentication and security:

✔

Modern Authentication

✔

Phone lock/unlock; unlock with smart PIN

✔

802.1x Authentication

✔

SSH access

✔

HTTP/HTTPS Proxy Server

✔

VLAN (LLDP/CDP/manual)

■

Incoming/Outgoing P2P and PSTN calls

■

In-call controls via UI

■

Calendar and Presence integration and meeting actions

■

Survivable Branch Appliance (SBA)

For a detailed list of features, see Teams Features Supported by C456HD. See also here for related Microsoft documentation.

Security

MDEP support

Configuration and management

■

Teams Admin Center (TAC) for provisioning and logging

■

AudioCodes OVOC / Device Manager

■

AudioCodes Redirect Server

Debugging tools

■

AudioCodes' Android Device Utility (see Android Device Utility)

■

Log upload to Microsoft server

■

Remote logging via Syslog

■

Diagnostic data

■

SSH Access

■

Phone screen capture

■

TCPdump

■

Audio Debug recording logs

■

Media logs (*.blog)

■

Port mirroring network monitoring

■

Remote Packet Capture network sniffer application

Localization support

■

Multi-lingual support; the language pack list is not yet final and is subject to modification.

■

Virtual Keyboard: QWERTY | Numeric

■

Global Network Banner

■

Dark Theme

Hardware

Feature

Details

Screen

Graphic 5” landscape color touch screen, 1280 x 720 resolution, with an intuitive user interface

Expansion unit (Gen2)

Optional expansion unit:

■

Expandable 5” portrait color touchscreen, 480x854 resolution

■

Up to three page views

■

Different color icons for each function shown on the LCD

■

Feature keys and indicators:

✔

USB 2.0 Type C external port for hosting headset

✔

USB 2.0 High-Speed for image data connection with main unit

✔

PWM dimming control for LCD backlight

✔

Individual power control by main unit

✔

Up to 60 one-touch speed dial contacts, plus call transfer, consult transfer, shared lines and queuing

■

Works as integral accessory of phone to which it is connected

Wired connectivity

■

Two RJ-45 [Gigabit Ethernet (GbE)] (10/100/1000BaseT Ethernet) ports: LAN and PC port

■

RJ-9 port (jack) for handset

■

USB Type-C port for USB headset

■

USB Type-A port for USB headset

■

USB 2.0, I2C interface, SPI to expansion unit

Wireless connectivity

Applies to devices with DBW (Dual Band Wi-Fi), as specified in their name):

■

Wi-Fi Dual Band 2.4GHz and 5GHz 802.11a/b/g/n/ac/802.11ax

■

Wi-Fi supported protocols: WEP, WPA/WPA2-Personal, WPA3-Personal, WPA/WPA2-Enterprise, WPA3-Enterprise, WPA3-Enterprise 192-bit

■

BT-BLE 5.2 for BToB and BT headsets

Bluetooth support

Integrated optional Bluetooth support (applies to devices with DBW):

■

Bluetooth headset support

■

Microsoft Better Together for device pairing

■

Max. # of Bluetooth devices that can connect simultaneously to device: 1

■

Bluetooth Wideband Speech (WBS) supported for headsets

Hardware-based mute

Integrated hardware-based mute (applies to devices with DBW - THM):

■

In idle mode (handset on hook), both the handset and hands-free microphones are disabled (hardware circuit cut off) and not operable.

■

When the handset is taken off hook, the handset and microphones function normally.

■

Placing the handset back on hook the handset and mics are disabled again.

■

The headset is not muted.

Hearing aid compatibility

Hearing Aid Compatibility (HAC) support

Power

■

12V DC jack

■

Power supply AC 100 ~ 240V

Mounting

■

Wall and desktop mounting options

■

One angle for desktop mount, another angle for wall mount

Presence indicator LED

Presence indicator corner LED (Yellow / Green / Red / Blue)

Function keys

■

Dedicated physical red action button for emergency calling

■

4-way navigation button with OK key

■

VOICE MAIL message (including Red LED)

■

CONTACTS

■

AC (AudioCodes) Smart Button (including White LED) —used as home key by default, can be programmed to function as Redial button

■

TRANSFER

■

HOLD

■

VOLUME control keys

■

MUTE (including Red LED)

■

HEADSET (including Green LED)

■

SPEAKER (including Green LED)

■

BACK

C456HD Part Names

Name	Unit	DBW Support	Power Adapter Included
TEAMS-C456HD-DBW-THM	C456HD IP phone with TAA Hardware Mute	Yes	No
TEAMS-C456HD-DBW	C456HD IP phone	Yes	No
TEAMS-C456HDPS-DBW	C456HD IP phone	Yes	Yes
TEAMS-C456HD	C456HD IP phone	No	No
TEAMS-C456HDPS	C456HD IP phone	No	Yes
EXPANSION_UNIT_G2	C456HD optional expansion unit (sidecar)	N/A	N/A