1. ENUM Registry architectures - Some Canadian options
These architecture diagrams are submitted by TELUS to the CSCN ENUM Task Force for the purpose of discussion only and no TELUS preference should be inferred for any of these or any other potential options. TELUS reserves the right to amend or withdraw the contents in this contribution at any time.
The options are not intended to show relationships between registrars and the registry operators or name servers.
Frank Norman :00

2. ENUM architectures
Options on the following pages are examples of Canadian options based upon the US options defined in ENUM FORUM Working Document # 6001_1_0
Options
1 Single joint Tier 1 for Canada & US
2.1 Delegation of single Canadian Tier 1 from within Tier 0
2.2 Delegation of single Canadian Tier 1 from within Skinny Tier 1
3.1 Delegation of multiple Canadian Tier 1s from within Tier 0
3.2 Delegation of multiple Canadian Tier 1s from within Skinny Tier 1

3. Option 1 Single joint Tier 1 for Canada & US Tier 0 Tier 1 US Tier 2s
$ORIGIN e164.arpa
1 IN NS nsnanp_enum.com
Tier 0
ns.ripe.net
$ORIGIN 1.e164.arpa
IN NS e.164.foo.net
IN NS enumopr2.com IN NS enumopr1.ca
IN NS enumopr1.ca
IN NS enumopr3.ca
IN NS tf_enumopr.ca
IN NS tf_enumopr.us
Tier 1
nsnanp_enum.com
US Tier 2s
e.164.foo.net
etcetera
Tier 2
enumopr1.ca
Tier 2
enumopr2.com
Tier 2
enumopr3.ca
$ORIGIN e164.arpa
IN NAPTR “u” E2U+sip”
$ORIGIN e164.arpa
IN NAPTR “u” E2U+sip”

4. Option 2.1 Delegation of single Canadian Tier 1 from within Tier 0
$ORIGIN e164.arpa
IN NS us_ns_enum.us
IN NS us_ns_enum.us
IN NS ca_ns_enum.ca
IN NS ca_ns_enum.ca
IN NS tf_ns_enum.int
Tier 0
ns.ripe.net
Tier 1
tf_ns_enum.int
Tier 1
us_ns_enum.us
Tier 1
ca_ns_enum.ca
$ORIGIN e164.arpa
IN NS us_ns_enum.us
$ORIGIN e164.arpa IN NS ca_ns_enum.ca
$ORIGIN e164.arpa
IN NS enumopr2.com IN NS enumopr1.ca
$ORIGIN e164.arpa
IN NS enumopr1.ca
IN NS enumopr3.ca
Tier 2
enumopr3.ca
Tier 2
enumopr2.com
Tier 2
enumopr1.ca
$ORIGIN e164.arpa
IN NAPTR “u” E2U+sip”
$ORIGIN e164.arpa
IN NAPTR “u” E2U+sip”
Tier 2
enumopr1.ca

5. Option 2.2
Delegation of single Canadian Tier 1 from within Skinny Tier 1
Tier 0
ns.ripe.net
$ORIGIN e164.arpa
1 IN NS nsnanp_enum.com
$ORIGIN 1. e164.arpa
3.7.9 IN NS us_ns_enum.us
8.0.9 IN NS us_ns_enum.us
3.1.6 IN NS ca_ns_enum.ca
4.0.6 IN NS ca_ns_enum.ca
0.0.8 IN NS tf_ns_enum.int
Skinny Tier 1
nsnanp_enum.com
Tier 1
tf_ns_enum.int
Tier 1
us_ns_enum.us
Tier 1
ca_ns_enum.ca
$ORIGIN e164.arpa
IN NS e164.foo.net
$ORIGIN e.164.arpa IN NS enum.bar.com
$ORIGIN e164.arpa
IN NS enumopr2.com
IN NS enumopr1.ca
$ORIGIN e.164.arpa
IN NS enumopr1.ca
IN NS enumopr3.ca
Tier 2
enumopr3.ca
Tier 2
enumopr2.com
Tier 2
enumopr1.ca
$ORIGIN e164.arpa
IN NAPTR “u” E2U+sip”
$ORIGIN e164.arpa
IN NAPTR “u” E2U+sip”
Tier 2
enumopr1.ca

6. Option 3.1 Delegation of multiple Canadian Tier 1s from within Tier 0
$ORIGIN e164.arpa
IN NS enum_tl_comp-a.us
IN NS enum_tl_comp-b.us
IN NS enum_tl_ca_opr-1.ca
IN NS enum_tl_ca_opr-1.ca
IN NS tf_ns_enum.int
Tier 0
ns.ripe.net
Tier 1
tf_ns_enum.int
Tier 1
enum_tl_comp-a.us
Tier 1
enum_tl_ca_opr-1.ca
Tier 1
enum_tl_ca_opr-2.ca
$ORIGIN e164.arpa
IN NS enumt2opr-1.ca
IN NS enumt2opr-3.ca
$ORIGIN e164.arpa
IN NS enumt2opr-2.com
IN NS enumot2pr-1.ca
Tier 2
enumopr3.ca
Tier 2
enumopr2.com
Tier 2
enumopr1.ca
$ORIGIN e164.arpa
IN NAPTR “u” E2U+sip”
$ORIGIN e164.arpa
IN NAPTR “u” E2U+sip”
Tier 2
enumopr1.ca

7. Option 3.2
Delegation of multiple Canadian Tier 1s from within Skinny Tier 1
Tier 0
ns.ripe.net
$ORIGIN e164.arpa
1 IN NS nsnanp_enum.com
$ORIGIN 1. e164.arpa
IN NS enum_tl_comp-a.us
IN NS enum_tl_comp-b.us
IN NS enum_tl_ca_opr-1.ca
IN NS enum_tl_ca_opr-1.ca
IN NS tf_ns_enum.int
Skinny Tier 1
nsnanp_enum.com
Tier 1
tf_ns_enum.int
Tier 1
tf_ns_enum.int
Tier 1
enum_tl_comp-a.us
etcetera
Tier 1
enum_tl_ca_opr-1.ca
Tier 1
enum_tl_ca_opr-2.ca
$ORIGIN e164.arpa
IN NS enumt2opr-1.ca
IN NS enumt2opr-3.ca
$ORIGIN e164.arpa
IN NS enumt2opr-2.com
IN NS enumot2pr-1.ca
Tier 2
enumopr3.ca
Tier 2
enumopr2.com
Tier 2
enumopr1.ca
$ORIGIN e164.arpa
IN NAPTR “u” E2U+sip”
$ORIGIN e164.arpa
IN NAPTR “u” E2U+sip”
Tier 2
enumopr1.ca