ENUM Routing

Revision as of 12:12, 10 December 2012

This module performs routing using the ENUM protocols that maps phone numbers to VoIP (or even other PSTN) resources. This protocol uses a specific format of DNS queries and depends on an external domain name server.

Configuration file

This is done from enumroute.conf file.

[general]
; This section sets global variables of the implementation
;
; priority: int: Priority in Yate's handlers chain
;  This MUST be set to a positive value to enable the module
;priority=0
;
; prefix: string: Local dial prefix for international numbers
;prefix=00
;
; minlen: int: Minimum length of a number (prefix removed) to try to resolve
;minlen=8
;
; domains: string: Comma separated list of domain suffixes to use for ENUM
;domains=e164.arpa,e164.org
;
; domain: string: Domain to use as suffix for ENUM
;  OBSOLETE - do not use, for backwards compatibility only
;domain=e164.arpa
;
; backup: string: Secondary domain to use as suffix for ENUM
;  OBSOLETE - do not use, for backwards compatibility only
;backup=e164.org
;
; timeout: int: Timeout of each resolver attempt in seconds
;timeout=3
;
; retries: int: Number of retries before giving up
;retries=2
;
; redirect: bool: Attempt to redirect the incoming call to found address
;redirect=false
;
; autofork: bool: Create a fallback route from ordered NAPTR records
;autofork=false
;
; forkstop: string: Regular expression matching the names of the errors
;  that will terminate the entire call, not just one route
;forkstop=busy
;
; maxcall: int: Milliseconds to call each route when forking the call
;  This parameter is constrained between 2000 and 120000 ms
;maxcall=30000
;
[protocols]
; Enable or disable individual protocols
;
; sip: bool: Enable the SIP protocol (E2U+SIP)
;sip=yes
;
; iax: bool: Enable the IAX2 protocol (E2U+IAX2)
;iax=yes
;
; h323: bool: Enable the H.323 protocol (E2U+H323)
;h323=yes
;
; jingle: bool Enable the Jingle protocol (E2U+XMPP)
;jingle=yes
;
; void: bool: Enable declaring unallocated numbers (E2U+VOID)
;void=yes
;
; pstn: bool: Enable routes to PSTN gateways (E2U+PSTN)
;pstn=no
;
; pstn: bool: Enable routes to Voice terminals (E2U+VOICE)
;voice=no
;
; tel: bool: Enable the TEL rerouting (E2U+TEL)
;tel=no

Routing numbers issues

ENUM can route only fully qualified E.164 phone numbers.
The number must start with a + character (or the configuration defined international dialing prefix) followed by the country code prefix and the rest of the number.

See also

• http://en.wikipedia.org/wiki/Telephone_Number_Mapping