Zone configuration for ENUM dialing
For locally registered endpoints to use ENUM dialing, you must configure an ENUM zone and related
search rules for each ENUM service used by remote endpoints.
Adding and configuring ENUM zones
To set up an ENUM zone:
1. Go to the Zones page
2. Click New. You are taken to the Create zone page.
3. Enter a Name for the zone and select a Type of ENUM.
4. Configure the ENUM zone settings as follows:
Field
Guidelines
Hop
The
hop count
count
counts for other zone types. The currently applicable hop count is maintained when the
VCS initiates a new search process for the alias returned by the DNS lookup.
DNS
The suffix to append to a transformed E.164 number to create an ENUM host name. It
suffix
represents the DNS zone (in the domain name space) to be queried for a NAPTR record.
H.323
Controls if H.323 records are looked up for this zone.
mode
SIP
Controls if SIP records are looked up for this zone.
mode
5. Click Create zone.
Note that:
Any number of ENUM zones may be configured on the VCS. You should configure at least one
n
ENUM zone for each DNS suffix that your endpoints may use.
Normal search rule pattern matching and prioritization rules apply to ENUM zones.
n
You must also
configure the VCS with details of DNS servers
n
NAPTR records.
Configuring matches 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:
a DNS suffix of e164.arpa (the domain specified by the ENUM standard)
n
a related search rule with a Mode of Any alias
n
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:
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
n
an ENUM lookup
Cisco VCS Administrator Guide (X6.1)
(VCS configuration >
Zones).
specified for an ENUM zone is applied in the same manner as hop
Dial plan and call processing
to be used when searching for
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