How to make an sms gateway?

Question

Yii

Hello. I was interested in how you can implement an sms gateway, as well as how legal it is. Now almost all operators offer for an additional fee to receive an unlimited number of sent SMS per month. So what problems can arise when sending? Maybe there are some timeouts when sending a certain amount of SMS? To what extent is it legal? Thanks in advance.

Answer 1

Try writing like this.

<? use Html; ?>

<h1><?= Html::encode($this->title) ?></h1>

Answer 2

There are two options: with the use of equipment for cellular communication (telephones, modems, GSM gateways, etc.) and without use.
Obviously, in order to do the first way, you need to have software and hardware compatible with it. The disadvantage of this approach is the relative complexity of implementation and the high cost of the solution.
For the second method, you need to conclude an agreement with the operator (or with a company that has such an agreement) for access to their API for sending SMS.
SMS spam is illegal.

Answer 3

If I'm not mistaken, operators only allow traffic from large aggregators, over time, due to the high number of outgoing SMS, they will block the number.

Answer 4

We open a standard contract of the same Beeline and read:

4.1. The Subscriber is obliged to:
... Use (for Individual Subscribers) the Services solely for personal, family, household and other needs not related to business activities and income generation.
...
Do not use a phone number (including unique identification codes):
- for holding lotteries, voting, contests, quizzes, advertising, surveys, mass
mailings (bulk mailing refers to sending messages to at least 100 (one hundred) recipients ) , installation of gateways (or devices) for access to the mobile and/or fixed communication networks, Internet telephony and other activities leading to ... damage to the Operator or third parties;
From which it becomes clear that a) using a number that is purchased by a private person for business needs is already contrary to the contract (although this is extremely difficult to detect), b) using the number for mass sending short messages is also contrary to the contract.
Violation of any of the clauses is enough to terminate the contract, at least.
In order to do everything legally, you need, as mentioned above, to conclude an agreement for exactly the service that you are going to provide. However, it may not necessarily be a local operator. Let's say that the same Clickatell works in general with the whole world and the prices are relatively acceptable for this business - three cents for a message within Russia.