WebRTC to SIP

ExpertFlow WebRTC

Providing Video solutions for the web users. Using this solution, a web user can initiate a video call request to the Cisco Contact Center Express (UCCX) and Enterprise (CCE) during an web chat session of Expertflow Hybrid Chat solution.

Communication Flow

A web user wants to connect to Cisco Contact Center agent via WebRTC Video without having to download or install any software
This user request will initiate a call from Customer WebRTC to Cisco Call Center agent
This WebRTC is converted by Expertflow’s WebRTC -SIP gateway to a SIP call, Which is then routed to Cisco Cubes/Gateway from where the routing will be handled by the Cisco end.
The initiating web user will be asked to allow system resources (mic, camera) access from his WebRTC capable web browser
Upon access grant, the video call will be started.

The call is encrypted via WebRTC from the customer’s browser to the EF WebRTC-SIP gateway, and from the gateway to Cisco CUBE using SIP with TLS.

Solution Prerequisite

Following are the mandatory prerequisites for a smooth installation of the solution up to 50 agents.

Hardware Requirements

Item	Minimum requirement
CPU	8 cores
RAM	8 GB
Disk	250 GB

Software Requirements

Item	Minimum requirement
OS	Debian 10
Node	Latest

TLS Requirements

Certificates from a valid signing authority or Domain signed certificate required for https protocol support.

Port Utilization For Product Installation

We will require Internet access for doing the installation of Expertflow WebRtc Server.

For Product connectivity with internal and external components

Ports mentioned in this section should be open for the mentioned product connectivity with different internal and external components.

Source Host	Destination Host	Source Port	Destination Port	Communication Protocol	Scope	Description
Web Audio Call/video Call	WebRTC Server	any	7443	WSS	Public
Web Audio Call/video Call	WebRTC Server	any	8021	TCP	Public
Web Audio Call/video Call	WebRTC Server	any	3000	HTTPS	Public

Ports enablement between EF WebRTC Server to Cisco Cube

WebRTC Server	Network Protocol	Application Protocol	Destination Server
1719	UDP	H.323 Gatekeeper RAS port	Cisco Cube
1720	TCP	H.323 Call Signaling
2855-2856	TCP	MSRP
3478	UDP	STUN service
3479	UDP	STUN service
5002	TCP	MLP protocol server
5003	UDP	Neighborhood service
5060	UDP & TCP	SIP UAS	Cisco Cube
5070	UDP & TCP	SIP UAS
5080	UDP & TCP	SIP UAS	Cisco Cube
8021	TCP	ESL
16384-32768	UDP	RTP/ RTCP multimedia streaming	Cisco Cube
5066	TCP	Websocket
7443	TCP	Websocket
8081-8082	TCP	Websocket

Integration on Website

Expertflow will provide the JS/HTML link to the website owner, which they need to add in the website header. Expertflow will also provide the sample HTML page that can be used as a reference for the website owner/developer.

Setting UP a Video Call

For setting up a video conferencing system , We have a Debian server running the latest stable FreeSWITCH build, IP phones( Zoiper/ Jabber) and Cisco SX set .

The default port5,060,506,150,805,081

codec,H.261 Video (passthru),mod_h26x
codec,H.263 Video (passthru),mod_h26x
codec,H.263+ Video (passthru),mod_h26x
codec,H.263++ Video (passthru),mod_h26x
codec,H.264 Video (passthru),mod_h26x