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Yealink SIP-T21 E2 Administrator's Guide

Yealink SIP-T21 E2
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Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
62
Half-duplex
Half-duplex transmission refers to transmitting voice or data in both directions, but in one
direction at a time; this means one device can send data on the line, but not receive data
simultaneously. You can configure the half-duplex transmission on both Internet port and PC
port for the IP phone to transmit in 10Mbps or 100Mbps.
Full-duplex
Full-duplex transmission refers to transmitting voice or data in both directions at the same
time; this means one device can send data on the line while receiving data. You can configure
the full-duplex transmission on both Internet port and PC port for the IP phone to transmit in
10Mbps, 100Mbps or 1000Mbps (1000Mbps is only applicable to SIP-
T54S/T52S/T48G/T48S/T46G/T46S/T42G/T42S/T40G/T29G/T27G/T23G IP phones).
Procedure
The transmission methods of Ethernet ports can be configured using the following methods.
Central
Provisioning
(Configuration File)
<y0000000000xx>.
cfg
Configure the transmission methods of the
Ethernet ports.
Parameters:
static.network.internet_port.speed_duplex
static.network.pc_port.speed_duplex

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Yealink SIP-T21 E2 Specifications

General IconGeneral
BrandYealink
ModelSIP-T21 E2
CategoryIP Phone
LanguageEnglish

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