Cisco 7800 Series Administration Manual page 151

Parameter
DNS Cache TTL Ignore
SSH User ID
SSH Password
Enable SSLv3
VLAN Settings
Parameter
Enable VLAN
Enable CDP
Enable LLDP-MED
Network Startup Delay
VLAN ID
Description
When set to Yes, the DNS query results are not cached. When set to
No, the phone caches the A/AAAA/SRV/CNAME record according to
the TTL responses.
Default: Yes
The administrator can set the User ID for SSH login.
Default: Blank
The administrator can set the Password for SSH login.
Default: Blank
Choose Yes to enable SSLv3. Choose No to disable.
Default: No
Description
Choose Yes to enable VLAN. Choose No to disable.
Enable CDP only if you are using a switch that has Cisco Discovery
Protocol. CDP is negotiation based and determines which VLAN the
IP phone resides in.
Choose Yes to enable LLDP-MED for the phone to advertise itself to
devices that use that discovery protocol.
When the LLDP-MED feature is enabled, after the phone has initialized
and Layer 2 connectivity is established, the phone sends out LLDP-MED
PDU frames. If the phone receives no acknowledgment, the manually
configured VLAN or default VLAN will be used if applicable. If the
CDP is used concurrently, the waiting period of 6 seconds is used. The
waiting period will increase the overall startup time for the phone.
Setting this value causes a delay for the switch to get to the forwarding
state before the phone will send out the first LLDP-MED packet. The
default delay is 3 seconds. For configuration of some switches, you
might need to increase this value to a higher value for LLDP-MED to
work. Configuring a delay can be important for networks that use
Spanning Tree Protocol.
If you use a VLAN without CDP (VLAN enabled and CDP disabled),
enter a VLAN ID for the IP phone. Note that only voice packets are
tagged with the VLAN ID. Do not use 1 for the VLAN ID.
Cisco IP Phone 7800 Series for Third-Party Call Control Administration Guide
Cisco IP Phone Web Page
137