Field
Guidelines
H.323 mode
Controls if H.323 records are looked up for this zone.
SIP mode
Controls if SIP records are looked up for this zone.
5. Click
Create zone
.
Note that:
n
Any number of ENUM zones may be configured on the VCS. You should configure at least one ENUM
zone for each DNS suffix that your endpoints may use.
n
Normal search rule pattern matching and prioritization rules apply to ENUM zones.
n
You must also
configure the VCS with details of DNS servers
to be used when searching for NAPTR
records.
Configuring search rules for ENUM zones
If you want locally registered endpoints to be able to make ENUM calls via the VCS, then at a minimum you
should configure an ENUM zone and a related search rule with:
n
a
DNS suffix
of
e164.arpa
(the domain specified by the ENUM standard)
n
a related search rule with a
Mode
of
Any alias
This results in DNS always being queried for all types of aliases, not just ENUMs. It also means that ENUM
dialing will only be successful if the enterprise being dialed uses the
e164.arpa
domain. To ensure
successful ENUM dialing, you must configure an ENUM zone for each domain that holds NAPTR records for
endpoints that callers in your enterprise might want to dial.
You can then set up search rules that filter the queries sent to each ENUM zone as follows:
n
use a
Mode
of
Alias pattern match
n
use the
Pattern string
and
Pattern type
fields to define the aliases for each domain that will trigger an
ENUM lookup
For example, you want to enable ENUM dialing from your network to a remote office in the UK where the
endpoints’ E.164 numbers start with
44
. You would configure an ENUM zone on your VCS, and then an
associated search rule with:
n
Mode
of
Alias pattern match
n
Pattern string
of
44
n
Pattern type
of
Prefix
This results in an ENUM query being sent to that zone only when someone dials a number starting with
44
.
Configuring transforms for ENUM zones
You can configure transforms for ENUM zones in the same way as any other zones (see the
Search and
zone transform process [p.178]
section for full information).
Any ENUM zone transforms are applied before the number is converted to an ENUM domain.
For example, you want to enable ENUM dialing from your network to endpoints at a remote site using a prefix
of
8
followed by the last 4 digits of the remote endpoints’ E.164 number. You would configure an ENUM zone
on your VCS and then an associated search rule with:
Cisco VCS Administrator Guide (X8.1.1)
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Dial plan and call processing
About ENUM dialing
