H3C S3600 Series Operation Manual page 31

Operation Manual – DHCP
H3C S3600 Series Ethernet Switches-Release 1510
Sub-option
AS-IP
(sub-option 2)
Voice
Configuration
(sub-option 3)
Fail-Over Call
Routing
(sub-option 4)
Feature
The AS-IP
sub-option carries
the IP address of
the alternate
server (AS).
The voice VLAN
configuration
sub-option carries
the ID of the voice
VLAN
VLAN and the flag
indicating whether
the voice VLAN
identification
function
enabled.
The fail-over call
routing sub-option
carries the
address
fail-over
routing and the
associated
number. The IP
address
fail-over
routing and the
dial number
sub-option 4 of
option 184 refer to
the IP address
and dial number
of the session
initiation protocol
(SIP) peer.
Chapter 2 DHCP Server Configuration
Function
The alternate NCP
server identified by
sub-option 2
option 184 acts as
the backup of the
NCP server. The
NCP server
specified by
option is used only
when the
address carried by
the NCP-IP
sub-option
unreachable
invalid.
The sub-option 3 of
option
comprises
parts:
One part carries
the
indicating
whether
voice VLAN
identification
function
is
enabled.
The other part
carries the ID of
the voice VLAN.
IP
for
call When the NCP
server
dial unreachable, a SIP
user can use the
for configured
call address and
number of the peer
in to establish
connection
communicate
the peer SIP user.
2-24
Note
of
The AS-IP sub-option
takes effect
when sub-option 1
this
(that is, the NCP-IP
IP sub-option) is defined
is
or
A flag value of 0
indicates that the
184
voice
two
identification
function is
enabled, in which
case
flag
information
carried by
the
VLAN ID part will
be neglected.
A flag value of 1
is
indicates that the
voice
identification
function
enabled.
is
IP
—
dial
a
and
with
only
VLAN
not
the
the
VLAN
is