Originally posted on June 25, 2022 @ 5:25 pm

Cisco Call Manager Express (CME) – Third Party SIP Phone Configuration

Are you looking to configure a third-party SIP phone with Cisco Call Manager Express (CME)? This guide will walk you through the process, ensuring your SIP phone gets registered successfully. Whether you’re using an Android app like CsipSimple or Sipdroid, or a Windows application like X-lite, this tutorial will help you get started.

Prerequisites

Before we begin, ensure that you have configured the IP address and your E1/T1 is up and running. Follow these steps to register a third-party SIP phone with CME.

Configuration Steps

1. Enter Configuration Mode:

   configure terminal

2. Enable SIP Connections:

   voice service voip
   allow-connections sip to sip

3. Set Up Global Voice Registration:

   voice register global
   mode cme
   source-address 10.1.1.50 port 5060
   max-dn 35
   max-pool 10
   authenticate register
   authenticate realm local

4. Configure Directory Number:

   voice register dn 1
   number 82011000
   name 82011000
   label 82011000

5. Set Up Voice Register Pool:

   voice register pool 1
   id mac 0000.0000.0001  # Dummy MAC ID
   number 1 dn 1
   username 82011000 password 82011000

Verification

To verify that your third-party SIP phone is registered, use the following command:

R1#show sip-ua status registrar

You should see an output similar to this:

Line        destination     expires(sec)  contact
call-id
peer
============================================================
82011000    10.1.1.5       118           10.1.1.5
N2EyZmUyM2MxZDM4MTg2NDQyYzNmODc2YjFkZDNlZDk.
40001

Important Note

This configuration registers third-party SIP phones with CME but does not include call routing. Ensure all necessary configurations are completed for full functionality.

Conclusion

Configuring a third-party SIP phone with Cisco Call Manager Express is straightforward with these steps. Now, you can register your SIP phone and verify its registration on CME. For testing, use applications like CsipSimple or Sipdroid on Android and X-lite on Windows.

By following this guide, you can easily set up your third-party SIP phone with CME. If you have any questions or run into issues, feel free to leave a comment below!

Avinash Karnani

I am working in an IT company and having 10+ years of experience into Cisco IP Telephony and Contact Center. I have worked on products like CUCM, CUC, UCCX, CME/CUE, IM&P, Voice Gateways, VG224, Gatekeepers, Attendant Console, Expressway, Mediasense, Asterisk, Microsoft Teams, Zoom etc. I am not an expert but i keep exploring whenever and wherever i can and share whatever i know. You can visit my LinkedIn profile by clicking on the icon below.

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