Avaya Webphone

Phone on the Browser with No VPN Required

On-Premises Solution for Avaya CM Users with no client installation or specialist firewall required.

Compare Comstice Webphone with Microsoft Teams and Avaya

Avaya Webphone

Download Comstice Webphone datasheet for Webphone benefits, use cases and technical architecture.

  • Login using existing Active Directory or Single Sign-On account.

  • Call Forwarding, Voicemail and DND buttons.

  • List of recent calls made and received. Ability to call back or copy the phone number and add to favourites.

  • Call logs for the last seven days


    Copy, callback and favourite the numbers

  • Access to Corporate Directory and CRM Contacts

  • Handle incoming calls


    Wide range of CODECs supported, including G.711 and G722

  • Call control features


    Query the Caller in CRM button

  • Transfer or conference the call to another number, Corporate Directory contact or a contact in Favorites

  • Switch between the initial call and the consult call.


    Customer Chats: Web and mobile

    Accepting and managing Callbacks

    Managing incoming customer emails, along with an automated ticketing system

  • Comstice Omnichannel features


    Customer Chats: Web and mobile

    Accepting and managing Callbacks

    Managing incoming customer emails, along with an automated ticketing system


Avaya Webphone inside Your CRM Platform

Comstice Webphone supports Salesforce, Zendesk and ServiceNow so you can integrate webphone functionality on your CRM pages.

Sales reps can do callbacks from the CRM pages and can handle incoming calls with the caller's CRM contact pushed for the new call.

The calls will go through your Avaya Seesion Manager and existing telephony infrastructure. No installation or Avaya phone required.

Why Avaya Webphone by Comstice

Unified Communications on the Browser

No VPN, no installation required. Enterprise telephony features on the web browser and mobile app.

Webphone inside CRM Pages

Comstice Webphone can work with any web browser and users can make and receive calls from CRM contacts or other web apps.

Chromebook Support

Low-cost, low maintenance Chromebook PCs can be used by enterprise users and partners with no installation required.

On-Premises Solution

Comstice Webphone offers full privacy and end-to-end encryption since it is running on company's network.

Compare Comstice Webphone with Avaya Workspaces and Microsoft Teams

Features Avaya Workspaces Microsoft
Comstice Webphone
Registered to Avaya Session Manager? Yes No Yes
Browser-Based? No Yes Yes
Can be integrated inside CRM webpages? No No Yes
Offers API library to implement inside Web applications? No Yes Yes
Works without Complex Security/Firewall Setup? No Yes Yes
Can be used by Avaya Call Center Agents? Yes No Yes Learn more
avaya CM Enterprise Telephony Features (Call Park, Pickup, Hunt Group Member etc.) Yes No Yes
SMS notifications for the incoming and missed calls No No Yes
Name-only inbound and outbound external calls for protecting customer numbers No No Yes
Reliable Mobile Softphone App with cell network fallback? Yes No Yes
MS Teams Chat/IM Access No Yes Yes
On-Premises Solution? Yes No Yes
Cisco UCCE Multi-tenancy

Chromebook Support for Avaya Enterprise Telephony Users

Sales reps, partners and temporary staff can use Chromebook PCs with no installation required and communicate with the clients through webphone.

Chromebook PCs are the low-cost, low-maintenance alternatives to other PCs. No data can be saved on the Chromebook and user has very limited permissions to install apps.

Comstice Webphone helps to handle audio conversations using browser. It can work without the VPN, through the public Internet.

CODECs Supported by the Web Browsers

CODEC Name Browser Compatibility
OPUS Chrome, Edge, Firefox, Safari
G.711 A-Law Chrome, Firefox, Safari
G.711 U-Law Chrome, Firefox, Safari
G.722 Chrome, Firefox, Safari
iLBC Chrome, Safari
iSAC Chrome, Safari
VP8 (video) Chrome, Edge, Firefox, Safari (12.1+)
H.264 (video) Chrome (52+), Edge, Firefox, Safari
VP9 (video) Chrome (48+), Firefox

Technical Architecture

You can run Comstice CuCM Webphone solution on your network or in your cloud.

Internal Agents

Eliminate client software installations on user PCs

Users can handle inbound and outbound calls using a web browser and can use telephony features imside the CRM pages, Intranet or other web apps.

Comstice Webphone offers Cisco CUCM enterprise telephony features with no software installation on user PCs.

Remote Agents

Users with tandard PC or ChromeBook can access Comstice Webphone with no VPN required.

Comstice CUCM Webphone is based on WebRTC technology. Using NAT on the external firewall and Web Proxy features, you can have a secure audio communications in the web browser. WebRTC uses HTTPS for signaling and Secure RTP for the audio streams.

Frequently Asked Questions

How does it work?

Comstice Webphone registers to Cisco Callmanager as a third-party SIP phone. Comstice WebRTC Gateway registers each WebRTc session on the web browser as a SIP Phone on Cisco CUCM.

What versions of Cisco Callmanager are supported?

Cisco CUCM Third-party SIP Phone support starts from v8.5. Any Cisco Callmanager with version 8.5 or higher is supported.

How does the rollout work?

Comstice WebRTC Server is provided as virtual server and hosted close to Cisco CUCM servers. Depending on the usage scenarios certain firewalls need to be opened as well.

What are the supported browsers?

Comstice Webphone uses WebRTC technology which is supported by Firefox, Chrome and recent Microsoft Edge browsers. Any modern browser supports WebRTC standard.

How is Comstice Webphone licensed?

It is licensed per named user (not the concurrent).

Which CODECs will be used?

Mainly G711 or G722 are used. CODECs will be negotiated during call establishment and depending on the Cisco CUCM configuration, OPUS, G711 or G722 can be used. Web browsers support a wide range of CODECs.

Does the solution support High Availability?

Comstice Webphone supports high availability. Multiple servers can be deployed and work as active/active in 1:1 redundancy.

How does audio recording work?

Audio recording will be done using media forking on the Cisco CUBE level. Otherwise, Comstice WebRTC Gateway can record the calls as well.

Do we need Avaya Workspaces or Cisco ExpressWay?

No. There is no dependency for Avaya Workspaces or Expressway.