HLR Lookup – what is hlr lookup with call flow
HLR lookup is the process of getting mobile number static and dynamic information. E.g IMSI, Visting MSC etc. HLR lookup gateway provides APIs for lookup. The lookup result is
IMSI of subscriber
Visiting MSC
MCC and MNC of roaming network.
Subscriber Status (Success/Failure).
Number Portability Information Can be derived by looking on IMSI and MSISDN.
Name of the mobile operator the current number belongs to.
Benefits:
Least Cost Routing: As a result of lookup, the bulk sms service provider gets the location information (visiting country and visiting network). A low cost route or network connection provider can be chosen for sending sms to the mobile subscriber.
Marketing database cleanup: While sending sms to a mobile , the subscriber may be not present permanently. To send this subscriber message again and again incur a cost and there is no outcome for business. HLR lookup service provides status code for a subscriber if lookup fails. If error is permanent failure ( e.g Unknown Subscriber) the database can be cleaned for this subscriber.
Billed the correct mobile operator, from lookup result, the mobile number portability information can be obtained. A lookup service provider can send CDRs for billing to the correct mobile operator.
Save cost, by using a more cleaned accurate mobile number database , a lookup service use can save cost. There are organizations e.g Colleges or Universities , do very regular messaging to thousands of alumni members. Lookup services cleans the database for inactive numbers , this saves thousand of dollars.
Real Time Information, Hlr Lookup , provides real time information for roaming, this enables the service user to plan advertisement according to the roaming places.
Use by Voip provider, A voip provider e.g Skype , can make a lookup before terminating call to the roaming device. The information collected can used to setup a low cost call route.
gsm vlr visitor location register
