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

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

We have been configuring Cisco IP Communicator / Cisco IP Phone like 79XX model in Cisco CME using SCCP but today lets configure Third Party SIP Phone using SIP Protocol and get it registered to CME.
Let’s start now – Assuming that you have configured the IP Address and made the E1/T1 up. With the below configuration i was able to register a Third Party SIP Phone.

configure terminal

voice service voip
 allow-connections sip to sip

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

voice register dn  1
 number 82011000
name 82011000
 label 82011000

voice register pool  1
id mac 0000.0000.0001          [[I have provided a dummy Mac-id]]
number 1 dn 1
username 82011000 password 82011000

I could see that my Third Party Phone has got an extension and i could also verify the same in the CME by typing the below commands.

R1#show sip-ua status registrar
Line          destination      expires(sec)  contact
call-id
peer
============================================================
82011000      10.1.1.5         118           10.1.1.5
N2EyZmUyM2MxZDM4MTg2NDQyYzNmODc2YjFkZDNlZDk.
40001

Did you see, its very easy to configure a Third Party SIP Phone in CME. To test the same you can use the below applications in android like  CsipSimple or Sipdroid and windows like X-lite.

Note:- The configuration only shows the registration of Third Party SIP Phones but however it wont perform call routing until and unless other necessary configuration are done.

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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