Optus Carrier From
Australia

The Optus Carrier From Australia is denoted by codes: 505 36, 505 90. The followings IDs are called HNI (Home network identity). This code is created by the combination of two other Mobile Country Code (MCC) and Mobile Network Code (MNC). The first three numbers stand for the MCC and they are used in order to identify the region which the carried comes from (in the following example it’s Australia). The last numbers of the HNI code are equal with the MNC and this ID is given for the specific mobile network operator.

Besides Optus Australia has assigned country code + 61. This number + 61 is equal with international calling code and it’s simply the telephone dialing prefixes used for calling Optus numbers.
Optus uses 1 GSM bands, 2 UMTS bands, 7 and 0 CDMA bands.. You can read the specific frequency bands in the table below. All bands of the Optus are display in MHz units.
Another important information in Optus Australia architectures is the standard of used protocols. It also uses 7 protocols such as GSM, UMTS, LTE, CDMA. The ISO standard code of Optus is AU. You can see more info about this mobile network operator at http://www.optus.com.au/. How to check Optus coverage? How to check if your phone will work in Australia?