Setting up Connectivity

Network Details

Note: The following IP Networks are not supported:
10.0.1.s/24, 10.0.2.x/24, 10.0.3.x/24, 10.1.1.x/24, 10.1.2.x/24, 10.1.3.x/24, 10.2.x.x/16, 10.3.x.x/16

Step 1: Enter IP address of the BE4000 appliance. Ensure that the IP address matches with that of the customer subnet address and ports (UDP 500, UDP 4500, and ESP 50) are connected, active, and reachable to the internet. Check the status of the ports using Cisco Business Edition 4000 Port Check Tool.

Step 2: Enter the IP address of the voicemail server. Voicemail IP address cannot be the same as BE4000 IP address.

Step 3: Enter the IP subnet mask. For example, is an IP subnet mask.

Step 4: Enter the default gateway address.

Step 5: Enter the ISP label. In case, there are issues in deploying the BE4000, the ISP label helps technicians to check if the fault is with the service provider. ISP label is an arbitrary identifier.

SMTP Server – Enables Voicemail to Email Functionality

Step 6: The SMTP Server configuration is required for voicemail to Email functionality, wherein voicemail received by an extension is sent as an email attachment to the registered email address.

  • If the customer has Office 365, Configure Office 365 first.

  • If the customer has their own SMTP relay (other than Office 365), ensure that the proprietary certificates of the SMTP relay are trusted by BE4000.

Step 7: Enter the IP Address or Domain Name of the SMTP server.

Note: You can configure Fully Qualified Domain Name (FQDN) of public SMTP servers only. BE4000 handles all Domain Name System (DNS) resolutions through the internet and thus only public FQDNs are accepted. For example,,  

Step 8: Enter the port number. Default value is 25.

Step 9: Choose one of the following secure modes from the “Security Mode” drop-down list:

  • None
  • SSL – Provide ways to encrypt a communication channel between two computers
  • STARTTLS – An extension to the Simple Mail Transfer Protocol (SMTP) service that allows an SMTP server and client to use Transport Layer Security (TLS) to provide private, authenticated communication over the internet.

Step 10: Enter an email address that is used as “From” address to send emails containing voicemail as an attachment. Ensure that the SMTP server allows receiving emails from the entered email address.

Step 11: Check the “Authenticate” check box to ensure that the voicemail to email functionality is secure. Enter a username and password that needs to be filled by the users while accessing the voicemail from email.

Step 12: You can validate the SMTP server address before configuring. An email address must be entered for receiving the voicemail as email. Ensure that the SMTP server allows receiving emails from the entered email address. If the SMTP server address is valid, you see the success message displayed on the portal and an email sent to the configured email address.


  • Before validating the SMTP server address, the portal saves the changes made to the SMTP server settings and the previously configured settings cannot be restored.

  • The portal only checks if the SMTP server address is valid and does not check the validity of the email address entered. You see success message displayed on the portal based on the voicemail application’s ability to authenticate and send email using the SMTP Relay. If the email address entered is invalid, you may not receive the email. Hence, you may see the success message on the portal even when you have not received the email.