3com 5500-ei pwr Instruccion De Instalación
2-12
Meanings of the sub-options for Option 184
Table 2-1 Meanings of the sub-options for Option 184
Sub-option
Feature
Function
Note
NCP-IP
(sub-option 1)
The NCP-IP sub-option
carries the IP address of
the network call processor
(NCP).
carries the IP address of
the network call processor
(NCP).
The IP address of the
NCP server carried by
sub-option 1 of Option
184 is intended for
identifying the server
serving as the network
call controller and the
server used for
application
downloading.
NCP server carried by
sub-option 1 of Option
184 is intended for
identifying the server
serving as the network
call controller and the
server used for
application
downloading.
When used in Option
184, this sub-option
must be the first
sub-option, that is,
sub-option 1
184, this sub-option
must be the first
sub-option, that is,
sub-option 1
AS-IP
(sub-option 2)
The AS-IP sub-option
carries the IP address of
the alternate server (AS).
carries the IP address of
the alternate server (AS).
The alternate NCP
server identified by
sub-option 2 of Option
184 acts as the backup
of the NCP server. The
NCP server specified
by this option is used
only when the IP
address carried by the
NCP-IP sub-option is
unreachable or invalid.
server identified by
sub-option 2 of Option
184 acts as the backup
of the NCP server. The
NCP server specified
by this option is used
only when the IP
address carried by the
NCP-IP sub-option is
unreachable or invalid.
The AS-IP sub-option
takes effect only when
sub-option 1 (that is,
the NCP-IP
sub-option) is defined
takes effect only when
sub-option 1 (that is,
the NCP-IP
sub-option) is defined
Voice VLAN
Configuration
Configuration
(sub-option 3)
The voice VLAN
configuration sub-option
carries the ID of the voice
VLAN and the flag
indicating whether the voice
VLAN identification function
is enabled.
configuration sub-option
carries the ID of the voice
VLAN and the flag
indicating whether the voice
VLAN identification function
is enabled.
The sub-option 3 of
Option 184 comprises
two parts:
Option 184 comprises
two parts:
z
One part carries the
flag indicating
whether the voice
VLAN identification
function is enabled.
flag indicating
whether the voice
VLAN identification
function is enabled.
z
The other part
carries the ID of the
voice VLAN.
carries the ID of the
voice VLAN.
z
A flag value of 0
indicates that the
voice VLAN
identification
function is not
enabled, in which
case the
information carried
by the VLAN ID part
will be neglected.
indicates that the
voice VLAN
identification
function is not
enabled, in which
case the
information carried
by the VLAN ID part
will be neglected.
z
A flag value of 1
indicates that the
voice VLAN
identification
function is enabled.
indicates that the
voice VLAN
identification
function is enabled.
Fail-Over Call
Routing
Routing
(sub-option 4)
The fail-over call routing
sub-option carries the IP
address for fail-over call
routing and the associated
dial number. The IP
address for fail-over call
routing and the dial number
in sub-option 4 of Option
184 refer to the IP address
and dial number of the
Session Initiation Protocol
(SIP) peer.
sub-option carries the IP
address for fail-over call
routing and the associated
dial number. The IP
address for fail-over call
routing and the dial number
in sub-option 4 of Option
184 refer to the IP address
and dial number of the
Session Initiation Protocol
(SIP) peer.
When the NCP server
is unreachable, a SIP
user can use the
configured IP address
and dial number of the
peer to establish a
connection and
communicate with the
peer SIP user.
is unreachable, a SIP
user can use the
configured IP address
and dial number of the
peer to establish a
connection and
communicate with the
peer SIP user.
—
For the configurations specifying to add sub-option 2, sub-option 3, and sub-option 4 in the response
packets to take effect, you need to configure the DHCP server to add sub-option 1.