By default, VPN Passthrough is enabled for IPsec, PPTP, and L2TP.
After making changes, click Submit to save your settings, or click Cancel to redisplay the page with the saved
settings.
Table 14: VPN Passthrough Settings
DescriptionField
Internet Protocol Security (IPsec) is a suite of
protocols used to implement secure exchange of
packets at the IP layer. Click Enabled to enable this
feature, or click Disabled to disable it.
Default setting: Enabled
IPsec Passthrough
Point-to-Point Tunneling Protocol (PPTP) allows the
Point-to-Point Protocol (PPP) to be tunneled through
an IP network. To disable PPTP Passthrough, select
Disabled.
Default setting: Enabled
PPTP Passthrough
Layer 2 Tunneling Protocol is the method used to
enable Point-to-Point sessions using the Internet on
the Layer 2 level. Click Enabled to enable this
feature, or click Disabled to disable it.
Default setting: Enabled
L2TP Passthrough
VLAN
Use the Network Setup > Advanced Settings > VLAN page to assign a VLAN ID to your network. For
example, your call control system may require a particular voice VLAN ID.
After making changes, click Submit to save your settings, or click Cancel to redisplay the page with the saved
settings.
Table 15: VLAN Settings
DescriptionField
Click Enabled to enable a VLAN, or click Disabled
to disable this feature.
Default setting: Disabled
Enable VLAN.
The VLAN ID can be any numeral from 1 to 4094.
When VLAN is enabled, the default setting is 1.
VLAN ID
Cisco ATA 191 and ATA 192 Analog Telephone Adapter Administration Guide for Multiplatform Firmware
27
Network Configuration
VLAN
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