> For the complete documentation index, see [llms.txt](https://docs.etelecom.vn/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.etelecom.vn/api-etelecom-english/instructions-for-use/app-etelecom.md).
# App eTelecom
## **What is eTelecom App?**
As one of two platforms that eTelecom provides and supports users to make calls, eTelecom is available on two platforms Android and IOS. To use the eTelecom application, you need to satisfy the following conditions:
* Download and install eTelecom app
* Account has been created on cs.etelecom.vn
* Hotline available
* Extension created
* Extension assigned to account
## **Install and use eTelecom app**
Step 1: Download the app
* [Download IOS App here](https://apps.apple.com/vn/app/etelecom-t%E1%BB%95ng-%C4%91%C3%A0i-cskh/id1558247375)
* [Download Android App here](https://play.google.com/store/apps/details?id=vn.etelecom.app.cs)
Step 2: Log in and use the app
* To be able to make calls, the account must be assigned an extension on cs.etelecom.vn
* Account must be assigned an extension and “Active”
Log in to the App with the user's Company Owner/Manager/Employee account
## **Functions of eTelecom App**
In the current version, eTelecom app provides 4 main functions:
* [Establish](#establish) : View and set up information
* [Call:](#call) dial and call screen
* [History](#call-history) : Here is the call history
* [Contacts](#contacts) : Displays the account's contacts
* [Zalo](#zalo-clould) : perform "Send call request", view request history and view OA tracking list
### **Establish**
* Account information: view account information
* For accounts with more than 1 company, you can transfer companies here
* You can reset the hotline used for outgoing calls.
### **Call**
Call out to customers:
* Dial the phone number and select call
Internal call:
* Internal calls will not be charged
* Dial the extension number and call
* Can make audio or video calls
* View the extension number in the “Internal Contacts” section inside the “Contacts” tab
Basic reasons why calls cannot be made:
* Extension not assigned: User account, extension not assigned, system cannot make any calls. Review in “Login” section
* If you are at the wrong company, you need to be at the right company to make a call, because eTelecom supports multiple companies and branches:
* Go to “Settings”
* Select “Store List”
* Select “access” to the correct company
Internet connection: The user's connection is unstable, try switching to wifi/4g and using it again.
### **Call history**
* **Voice call**
* **Video Call:** only applies to internal calls.
* **Playback recording:** Playback the recording of this call.
{% hint style="info" %}
*Note: About 1-3 minutes after the call is completed, a new recording file is created and transmitted from the server.*
{% endhint %}
Support filter by "Phone Number" and "Status" call to help you search quickly
### **Contacts**
eTelecom's directory has 3 types:
* **From device** : contacts available in phone, granted permission to import into app
* **Internal directory:** displays contact numbers of extensions in the same switchboard
* **The company's public directory** , anyone can see this directory
## **Zalo Clould**
To use this feature on the eTelecom App, you need to " [Link Zalo Official Account " on the ](/api-etelecom-english/api-integration/zalo-cloud/instructions-for-connecting-zalo-cloud.md)[cs.etelecom.vn](https://cs.etelecom.vn/) admin page .
### **Followers**
Here you can see the list of Zalo users who are interested in your OA.
Displays the following information:
* Follower Name
* Sex
* OA that user follows
You can click on the phone icon to make calls to these users.
{% hint style="info" %}
*Note:*
*The call will be connected if this User has interacted with your OA within 30 days.*
*The hotline number you choose is the OA ID of the OA this person is interested in.*
{% endhint %}
In addition, the App also supports filtering according to the following information:
* OA Name
* Full name
* Sex
### ZCC
#### Send call request
To use the ZCC feature, you need to "Send a call request" to the customer's phone number you want to call. Click "Send request".
* Select OA
* Enter the customer phone number to send the request
* Select reason for calling
#### Call request history
Displays the following information:
* Customer phone number
* Reason for calling:
* Product / service consulting
* Delivery Notice
* Order / Appointment Confirmation
* Flight announcement
* Update order
* Customer feedback:
* "Agree" will allow you to call customers for free until the expiration date (shown in the "Expiration Date" column)
* "No response" you will not be able to call the customer -> You can resend the call request after 24 hours from the time in the "Date created" column
* "Reject" will not allow you to call the customer -> You can resend the call request **without having to wait** after 24 hours
* Creation Date: The date you made the call request
In addition, it also supports filtering according to the following information:
* From OA
* Recipient phone number
* Reason
* Customer Feedback
