Introduction I have recently had a strange issue with call transfers on CME 12.0. I was getting “SIP/2.0 488 Not Acceptable Here” from ISP while trying to transfer a call from PSTN to another extension. Let’s see how we can solve this problem and make the transfer work. Equipment Used The phone I used was
Introduction In this post we will learn how to upload SIP firmware to Cisco 7911 IP Phone. This will make possible using the phone with third party SIP servers. The instruction below applies to all Cisco 7900 series IP phones. Step 1. Download the SIP firmware. Before we start, let’s download the required SIP firmware
Introduction This article show step by step how to upgrade the firmware of a Cisco IP phone managed by CME(Call Manager Express). I will be upgrading Cisco 8851 IP phone(from version 12-0-1-11 to 12-5-1SR3-74) using Cisco ISR4331/K9 router as a CME. Step 1. Download the firmware files The first thing we need to do is
Introduction In this article we will learn how to change the file format and bit rate for call recording files on a FreePBX server. This will allow you to save a lot of disk space without any noticeable loss in quality of the call recording files. Before you start Call recording is disabled by default
Introduction In this article we will go through all the steps required to configure call queues in FreePBX 13. Call Queuing is a feature of almost any call center which allows you to keep incoming calls in a queue while they are waiting for their turn to be served by agents. Requirements I assume that
Introduction In this article we will see how we can bypass SIP traffic blocking. There are a lot of countries where local ISPs block SIP traffic. It makes it impossible for enterprises or private persons to leverage from low rates on international calls provided by various SIP trunk providers. Solution One of the solutions is
Introduction In this post you will learn how to configure multiple IP phones with the same extension in FreePBX. This extension is usually called shared line, because it is shared by different devices. Using shared lines is very convenient when you have two or more devices and want to be able to answer the incoming
Introduction This post explains why you are getting “Host Not Found” error on your newly registered IP phone’s display and how to fix it. Why “Host Not Found” error? The reason you are getting this error is that when you autoregister a brand new IP phone, it attempts to take you through the self-provision wizard,
Introduction In this post we will create a basic IVR application on Cisco UCCX 11.5 server. Our application will play out the greeting to the caller and allow him to enter the extension number or wait for being transferred to the operator. Prerequisites Before you go through this tutorial you should have a working UCCX
Introduction In this article we will go through the integration process of UCCX (Cisco Unified Contact Center Express) 11.5 with CUCM (Cisco Unified Communications Manager) 11.5. The process will be similar for other software versions as well. CUCM side: 1. Enable AXL Web Service on CUCM Go to Cisco Unified Serviceability -> Service activation and
