In this section:
The global servers object allows you to configure ENUM and E911 servers as well as DNS global settings. The 'servers' object includes global configurations for DNS servers used for SIP NAPTR, SRV, and A-record lookups.
When the ERE receives multiple records with the same order value and preference for a NAPTR query, the ERE considers only the first record received to resolve the route. If it does not find a route for the chosen record, it returns a 'no route found' response, and will not consider other records to resolve the route.
However, in the case where the order value and preference are different for the received records, the record chosen to resolve the route is based on the RFC rule. In this scenario, if the ERE/PSX does not find the route for the chosen record, it returns a 'no route found' response, and will not consider other records to resolve the route.
The ENUM server returns a NAPTR response with an IP address to the SBC. To route a call to the IP Peer associated with this IP address, ensure the following is provisioned in ERE.
The SBC supports load balancing across ENUM servers for individual ENUM zones using enumDomainName, lwresdProfile and enumDomainNameLabel parameters described in this section. ENUM client routes the query to ENUM servers based on the load balancing scheme configured for that zone. ENUM client uses the following load balancing schemes to route the requests to ENUM servers. For details, refer to ENUM Support.
% set global servers dns global ednsFailureCount <1-5> ednsPayloadSize <512-4096 bytes> ednsRetryAfter <60-180 seconds> iterationCount <0-32> monitoringInterval <0-300> probeInterval <0-300> retransmissionCount <0-20> retransmissionTimer <100-10000> timeouts <0-32> e911 <e911_service_name> criteria triggerCriteria <criteria> defaultTreatment <applyFinalTreatment | routeAsDialed> flags active <disable | enable> requestTimeOut <0-2147483647> routePrecedence <local | lro> e911VpcDevice <device_name> deviceData <0-32767> ipAddress <ip_address> portNumber <0-65535> enumDomainName <domain_name> forwardersData <0-99999> forwarderDescription <description> forwarderIP <IPv4 or IPv6 address> loadDistribution <proportion | roundRobin | sequence> queryRetryTimer <0-10000 ms> zoneType individual enumDomainNameLabel DEFAULT_ZONE_LABEL enumDomainNameId <enumDomainName's name> enumService <name> criteria triggerCriteria <criteria> defaultTreatment <applyFinalTreatment | routeAsDialed> enumDefinitions privateDomainNameForEnumLookups <private_domain_name> flags active <disable | enable> processCallingNumber <disable | enable> processNewANI <disable | enable> priority <129-140> requestTimeOut <0-2147483647> serviceType <cnam | lnp | sipAor> lwresdProfile <profile name> description enableLwresdLog enumDomainNameLabel
Parameter | Length/Range | Description |
---|---|---|
| N/A | Use this object to configure global DNS settings. Parameters:
Use the following command to enable EDNS support:
|
| N/A | Use this parameter to configure enhanced 911 service.
|
| N/A | Use this object to configure the IP address and port number of the E911 VoIP Positioning Center (VPC) device. This parameter is used for queries to one or more E911 VPCs for the Emergency Services Routing Number of the Public Services Answering Point nearest the current location of the caller.
|
enumDomainName | 1-63 characters |
All Refer to ENUM Support for additional feature details and descriptions. |
enumDomainNameLabel | N/A |
|
| N/A | Use this object to configure ENUM service. See Global ENUM Service Parameters table below for parameter details. |
lwresdProfile | N/A |
Only one |
To support ENUM services for SBC in ERE mode, manually create an ACL rule towards ENUM server to allow the packets (ENUM responses) from ENUM server into SBC. See the CLI example below.
Set fillRate
to a higher value (for example, fillRate
= 2000) to support high ENUM call loads (more than 20 cps). Refer to IP Access Control List - CLI for configuration details.
% set addressContext default ipAccessControlList rule ENUMSEV precedence 1 protocol any sourceIpAddress <ENUM_SERVER_ADDRESS> sourceAddressPrefixLength 32 action accept fillRate 50 bucketSize 50 state enabled
Parameter | Length/Range | Description |
---|---|---|
<service_name> | 1-23 | ENUM Service name. |
criteria | 1-23 | triggerCriteria <criteria> – Trigger criteria to use for this ENUM Service. The characters #%^&(){}<>,/\;`[]=!$"*?|~ and SPACE are not allowed. |
defaultTreatment | N/A | Default treatment to apply to this ENUM Service.
|
enumDefinitions | Use this parameter to specify how to treat ENUM definitions.
| |
flags |
| |
priority | 129-140 | Specifies the priority (order) of ENUM service execution. If this parameter is not set or set to the default of '129', default priorities are assigned for LNP (130), CNAM (131) and SIP AoR (132). If a different order of service execution is desired, set the priorities accordingly. For example, setting CNAM priority to 133 executes SIP AoR before CNAM. |
requestTimeOut | 0-2147483647 | Request timeout value, in milliseconds. (default = 2000) |
serviceType | N/A | Use this parameter to specify the ENUM service type. Options are:
|
To configure E911 server, execute the following CLI commands:
% set global country 1 listOfNumberOfDigitsToMatch criteria 10,6,3,0 % commit % set profiles digitParameterHandling numberTranslationCriteria DEFAULT_E911 none Sonus_NULL Sonus_NULL 4451211022 1 lookupType e911 % set global servers e911 DEFAULT_E911 flags active enable % set global servers e911VpcDevice DEFAULT_E911 deviceData 0 ipAddress 10.6.30.137 portNumber 9000 % set global servers e911 DEFAULT_E911 vpcDevice DEFAULT_E911 % set global servers e911 DEFAULT_E911 criteria triggerCriteria DEFAULT_E911
To configure global ENUM service, execute the following CLI commands:
Configure numberTranslationCriteria for calledUri as below
% set profiles digitParameterHandling numberTranslationCriteria ENUM_CR calledUri ims.comcast.com Sonus_NULL 9876543210 1 lookupType enumCnam
Provision enumService:
% set global servers enumService ENUMSER1 criteria triggerCriteria ENUM_CR % set global servers enumService ENUMSER1 serviceType cnam flags active enable
Configure the private domain 'ims.comcast.com' for ENUM service.
% set global servers enumService ENUMSER1 enumDefinitions privateDomainNameForEnumLookups ims.comcast.com