About Zenda

Zenda Call Manager System is a modern, intelligent and flexible VOIP Telephony System that works stand alone, and provides both traditional PBX capabilities, and VOIP era features & tools. The main philosophy of Zenda is to narrow the gap between traditional PBX’s world, and VOIP era. So Although it’s built on Asterisk, the most famous open source VOIP Stack; it differs from all other Asterisk based VOIP systems in that while most of them are just some how of customization of the FreePBX Logic, which make them almost similar in both strong and weak points; we find that Zenda come with logic & modules completely built from scratch to satisfy its philosophy and accomplish its goal.

Basic Features

January 29, 2023

Traditional PBX Features

Although it’s a completely VOIP System, Zenda provides most of features supplied by traditional PBX (e.g Panasonic, NEC, …) in a very handy and easy to use way.

Some of those features are:

  • Call Hold/Retrieve
  • Call Park/Retrieve
  • Blind transfer
  • Attendant transfer
  • Conference
  • Call Waiting
  • Call Pickup
  • Call Forward (FWD)
  • Don’t Disturb (DND)
  • Dial Lock/Unlock
  • Busy Override/Deny
  • Busy Whisper/Deny
  • Busy Spying/Deny

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January 29, 2023

Interactive Voice Response (IVR)

IVR is an automated phone system with call routing capabilities.

It allows customers to interact with a computer before being connected to a representative. This technology works in tandem with Automatic Call Distribution, typically found in a call center.

With Zenda, you can construct a full IVR-TREE that reflects your organization services, with multi-levels options and menus, where caller can be classified and easily directed to the proper destination.

January 29, 2023

Queue Lists

Queue is a cornerstone in any Call Center Service. It assures that incoming calls are distributed fairly between agents, and in case of all agents are busy; the call is held for a specific duration waiting for an agent to be idle. During this waiting; caller hears a pre-selected queue media (which can be differenct for each queue).

If queue duration expires without agent become idle; the call is handled according to the pre-set queue-overflow (e.g. wait again, send to other queue, …).

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January 29, 2023

Direct Inward System Access (DISA)

If you want your agents to dial customers from outside your organization (e.g. from agent’s home), but dot that throw your organization’s trunk lines so that customer see you buiseniss number on his phone (instead of agents home phone number); then Zenda DISA is your way to go!

Zenda DISA not only display your business phone number to your customer; but also assures that any call to customer is done throw your Call Manager system, in which you can trak, monitor, record, and measure your agent/organization Service Level.

January 29, 2023

Voice Mail

Not ready to answer the calls yourself? No problem! With unlimited mailboxes, Zenda Voice Mail service allow each agent/group to get voice messages from customers (or even from another agent) when they are not able to get the call directly (e.g. when they are busy, or out of work).

You also can use this service to automatically directing some customer calls to specific mailbox after your working hours, or even during working hours (e.g. for complains).

Each mailbox can be linked with Email(s), so that the voice message is received by Zenda Voice Mail and sent instantly to your email addres(s) too.

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January 29, 2023

Call Recording

Want to check the quality of your agents, or need a trustable fair document for your customer’s calls, or even want to get an eye on your business? Zenda here to help!

No matter the call is coming from customer, or initiated to him, or even an internal call between your agents; Zenda can easyly record it without effort, and – most importantly – without any extra cost at all!

Recorded calls are stored safly on Zenda Server; but authorized users can interact with it (e.g. play, download to their pc) throw a very handy Web-Based interface.

January 29, 2023


You can use any SIP standard hard phone and/or softphone for your extension, and access all features with simple DTMF digits (e.g. to set/unset call waiting, just dial *751/*750 and you’r in).

But if you want to get full system integration with more easier way; then ZendaSIP is here for you!

ZendaSIP is a free SIP standard softphone, designed from scratch specifically to work with Zenda Call Manager. It gives you access to all system features without need to dial any DTMF, or even need to know it! Just a simple link/button click do the job.

It gives you a level of integration that can’t be acheived with other hard/soft phones, e.g screen reflects your live state (ready, forward, call waiting, dial lock, and your voice mail).

it also has a very important and needed feature, Forced Auto Answer. When it’is applied by system admin for any extension; this extension is automatically answer the incoming call without ringing, and without any control for the extension to stop that.

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