To Next Page

To Previous Page

Network Configurations

#Configure the address, user name, and password of the L2TP server.

static.network.l2tp_server.address = 192.168.10.25

static.network.l2tp_server.username = vpnuser

static.network.l2tp_server.password = 0123456

After provisioning, connect the phone to the VPN environment.

Exporting the OpenVPN Configuration File from the Phone

You can export the OpenVPN configuration file via web user interface.

Procedure

1. From the web user interface, click Network > Advanced > VPN.

Turn on VPN feature.

3. In the Export VPN Configuration File field, click Export to open the file download window, and then save the

file to your local system.

Importing the OpenVPN Configuration File to Phone

You can import the OpenVPN configuration file from local to the phones via the web user interface. The changes in

the configuration file will take effect after the file is imported.

Procedure

1. From the web user interface, click Network > Advanced > VPN.

Turn on VPN feature.

3. In the Import VPN Configuration File field, click Browse to locate a OpenVPN configuration file in your local sys-

tem.

4. Click Upload to import the configuration file.

Quality of Service (QoS)

VoIP is extremely bandwidth and delay-sensitive. QoS is a major issue in VoIP implementations, regarding how to

guarantee that packet traffic is not delayed or dropped due to interference from other lower priority traffic. VoIP can

guarantee high-quality QoS only if the voice and the SIP packets are given priority over other kinds of network

traffic. The phones support the DiffServ model of QoS.

Voice QoS

In order to make VoIP transmissions intelligible to receivers, voice packets should not be dropped, excessively

delayed, or made to suffer varying delay. DiffServ model can guarantee high-quality voice transmission when the

voice packets are configured to a higher DSCP value.

SIP QoS

The SIP protocol is used for creating, modifying, and terminating two-party or multi-party sessions. To ensure good

voice quality, SIP packets emanated from the phones should be configured with a high transmission priority.

DSCPs for voice and SIP packets can be specified respectively.

Note: For voice and SIP packets, the phone obtains DSCP info from the network policy if LLDP feature is enabled, which

takes precedence over manual settings. For more information on LLDP, refer to LLDP Configuration.

Topic

Voice and SIP QoS Configuration

The following table lists the parameters you can use to configure voice QoS and SIP QoS.

Yealink SIP-T2 User Manual

Questions and Answers: