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prepaid phone cards E1 PRI GSM Gateways

This project received 8 bids from talented freelancers with an average bid price of $1369 USD.

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Employer working
Skills Required
Project Budget
$750 - $1500 USD
Total Bids
8
Project Description

prepaid phone cards

we are looking to make a prepaid phone cards system with (E1 PRI GSM Gateways)
for now we want to run :

2 x (E1)2,048 Mbit/s (32Channel) LANDLINE
64 x GSM ports + sim array for future

The posibility to add sim array in the future with out changing the whole system,


in my country there is 3 gsm operateor, eash operator has diffrent prices
1 example : when you call from Operator 1 to operator 1 the price is low
when you call from operator 1 to operator 1 in day time the prize is very low
2 example : if you call from operator 1 to operator 2 the price is hight

so, we want to identify the operator by the first 4 dijit to save cost
we want to be able to manage that,

Code to generate for :
prepaid phone cards COD pin to call only Operator 1
prepaid phone cards COD pin to call only Operator 2
prepaid phone cards COD pin to call only Operator 3
prepaid phone cards COD pin to call all 3 Operator ( in the case the the system should send the call to the right gsm channel to save us money)

dialing number example :
Standard Dialing with PIN number
PINless Setup ex : dial "1" to instantly register your phone number. You can register multiple phone numbers.

able to upload PIN number to our website
and to print prepaid phone cards

we need consulting advise as to the best equipment and billing software ect. and you are able to modify add creat module for Existing Equipment for our need, the software could be open source software, or we buy equipment and software that reach our need, Trixbox, A2Billing, pbx Asterisk

sorry for my english

thank you

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