CCNA Voice Lab: Configuring Phones in Cisco Unified Communications Manager Express (CUCME)

Configure the Maximum Number of Phones Allowed to Register.

 

Before an IP phone can register with CUCME, you'll need to set the maximum number allowed to register to CUCME. 

 

The max limit depends on the router platform and the higher the router model, the more IP phones CUCME will support. Note that each reservation consumes router's Digital Signaling Processor (DSP) resources and license purchased.

RtrPod1#configure terminal

Enter configuration commands, one per line.  End with CNTL/Z.

RtrPod1(config)#telephony-service

RtrPod1(config-telephony)#?

  auto             Define dn range for auto assignment

  auto-reg-ephone  Enable Ephone Auto-Registration

  create           create cnf for ethernet phone

  exit             Exit from telephony config mode

  ip               Define IP address and port for Telephony-Service/Fallback

  keepalive        Define keepalive timeout period to unregister IP phones

  max-dn           Maximum directory numbers supported

  max-ephones      Define max number of IP phones

  no               Negate or set default values of a command

RtrPod1(config-telephony)#max-ephones ?

  <1-42>  Maximum phones to support

RtrPod1(config-telephony)#max-ephones 5

Establish the Maximum Number of Directory Numbers (Phone Numbers)

 

Before an IP phone can register with CUCME, you'll need to set the maximum number of directory numbers (DN). The maxmimum number of supported DN depends on the router model and it also consume router resources.

RtrPod1(config-telephony)#max-dn ?

  <1-144>  Maximum directory numbers supported

RtrPod1(config-telephony)#max-dn 5

Set the IP Address Used by CUCME

Before an IP phone can register, CUCME needs an IP address used to receive requests and respond to IP phones.

CUCME uses TCP port 2000 by defaut, but it can be changed with the port option.

Any valid IP address can be used on the Voice Router, but it's recommended to use either the Voice VLAN subinterface or a Loopback address since it's always up.

RtrPod1(config-telephony)#ip source-address 10.15.0.1

% Incomplete command.

RtrPod1(config-telephony)#ip source-address 10.15.0.1 ?

  port  Define tcp port for Telephony Service/CM FALLBACK

RtrPod1(config-telephony)#ip source-address 10.15.0.1 port 2000   // OLDER CUCME VERSION REQUIRE TO ADD PORT NUMBER

Create the Default Template Files

Newer CUCME versions will automatically create the default template files for the IP phone. In older CUCME versions, You'll need to manually create the template files. Notice the SCCP (Skinny Client Control Protocol) phone registration is rejected in CUCME due to a clock syncrhonization issue.

RtrPod1(config-telephony)#create ?

  cnf-files  create XML cnf for ethernet phone

RtrPod1(config-telephony)#create cnf-file

Creating CNF files

CNF-FILES: Clock is not set or synchronized, retaining old versionStamps

CNF files update complete

RtrPod1(config-telephony)#

%IPPHONE-6-REG_ALARM: 24: Name=SEP001D452D50BD Load= SCCP41.8-3-3SR2S Last=Phone-Reg-Rej

RtrPod1(config-telephony)#

%IPPHONE-6-REG_ALARM: 24: Name=SEP001D452D50BD Load= SCCP41.8-3-3SR2S Last=Phone-Reg-Rej

RtrPod1(config-telephony)#

%IPPHONE-6-REG_ALARM: 24: Name=SEP001D452D50BD Load= SCCP41.8-3-3SR2S Last=Phone-Reg-Rej

<OUTPUT TRUNCATED>

 

telephony-service

max-ephones 5

max-dn 10

ip source-address 10.15.0.1 port 2000

create cnf-files version-stamp Jan 01 2002 00:00:00

RtrPod1#sh clock

0:8:24.504 UTC Tue Jan 1 2002

SwPod1#sh clock

0:8:3.245 UTC Tue Jan 1 2002

RtrPod1(config-telephony)#auto-reg-ephone

RtrPod1(config-telephony)#

%IPPHONE-6-REGISTER: ephone-2 IP:10.15.0.11 Socket:2 DeviceType:Phone has registered.

RtrPod1(config-telephony)#

%IPPHONE-6-REGISTER: ephone-1 IP:10.15.0.12 Socket:2 DeviceType:Phone has registered.

Configuring Directory Numbers (DN)

Ephone-dns can be single-line, dual-line or octo-line (as of CUCME 4.1). This is the number of simultaneous audio channels (lines) usable per phone button. For example, call waiting and call transfer will need two audio channels: one channel for the original caller and another to establish the third party connection. Most IP phones will use dual-line dns.

RtrPod1(config)#ephone-dn ?

  <1-288>  ephone-dn tag

RtrPod1(config)#ephone-dn 1 ?

  <cr>

RtrPod1(config)#ephone-dn 1

RtrPod1(config-ephone-dn)#%LINK-3-UPDOWN: Interface ephone_dsp DN 1.1, changed state to up

RtrPod1(config-ephone-dn)#number 2001

RtrPod1(config-ephone-dn)#ephone-dn 2

RtrPod1(config-ephone-dn)#%LINK-3-UPDOWN: Interface ephone_dsp DN 2.1, changed state to up

RtrPod1(config-ephone-dn)#number 2002

RtrPod1(config-ephone-dn)#ephone-dn 3

RtrPod1(config-ephone-dn)#%LINK-3-UPDOWN: Interface ephone_dsp DN 3.1, changed state to up

RtrPod1(config-ephone-dn)#number 2003

RtrPod1(config-ephone-dn)#ephone-dn 4

RtrPod1(config-ephone-dn)#%LINK-3-UPDOWN: Interface ephone_dsp DN 4.1, changed state to up

RtrPod1(config-ephone-dn)#number 2004

Create an Ephone and Assign the MAC Address of the IP phone

CUCME uses the ephone to connect directory numbers (ephone-dns) to the MAC address of the IP phone. Three common ways to get the MAC address of an IP phone:

1. From the box of the IP phone (sticker lable with bar codes)

2. At the back of the IP phone

3. From the LCD screen of the IP phone: press Settings > Network Settings.

Get the MAC address from the Switch MAC address table or from the DHCP pool binding in the Voice Router.

SwPod1#show mac address-table

          Mac Address Table

-------------------------------------------

Vlan    Mac Address       Type        Ports

----    -----------       --------    -----

   1    0001.c9ce.b902    DYNAMIC     Fa0/1

  10    0001.c9ce.b902    DYNAMIC     Fa0/1

  11    0001.c9ce.b902    DYNAMIC     Fa0/1

  15    0001.c9ce.b902    DYNAMIC     Fa0/1

  15    0002.17bb.33b0    DYNAMIC     Fa0/3

  15    0050.0f55.928d    DYNAMIC     Fa0/4

RtrPod1#show ip dhcp binding

IP address       Client-ID/              Lease expiration        Type

                 Hardware address

10.15.0.11       0002.17BB.33B0           --                     Automatic

10.15.0.12       0050.0F55.928D           --                     Automatic

Create an Ephone and Assign the MAC Address

RtrPod1(config)#ephone 1

RtrPod1(config-ephone)#?

  button       Assign ephone-dn phone lines to phone using format with feature

               options.

  exit         Exit from ephone configuration mode

  mac-address  define ethernet phone MAC address

  no           Negate or set default values of a command

  type         Define ip-phone type

RtrPod1(config-ephone)#mac-address ?

  H.H.H  Mac address

RtrPod1(config-ephone)#mac-address 0002.17BB.33B0

RtrPod1(config-ephone)#exit

RtrPod1(config)#ephone 2

RtrPod1(config-ephone)#mac-address 0050.0F55.928D

RtrPod1(config-telephony)#

%IPPHONE-6-REGISTER: ephone-2 IP:10.15.0.11 Socket:2 DeviceType:Phone has registered.

RtrPod1(config-telephony)#

%IPPHONE-6-REGISTER: ephone-1 IP:10.15.0.12 Socket:2 DeviceType:Phone has registered.

<OUTPUT TRUNCATED>

telephony-service

max-ephones 5

max-dn 5

ip source-address 10.15.0.1 port 2000

create cnf-files version-stamp Jan 01 2002 00:00:00

!

ephone-dn 1

number 2001

!

ephone-dn 2

number 2002

!

ephone-dn 3

number 2003

!

ephone-dn 4

number 2004

!

ephone 1

device-security-mode none

mac-address 0002.17BB.33B0

type 7960

button 1:2

!

ephone 2

device-security-mode none

mac-address 0050.0F55.928D

type 7960

button 1:1

RtrPod1# show ephone

ephone-1 Mac:0002.17BB.33B0 TCP socket:[1] activeLine:0 REGISTERED in SCCP ver 12 and Server in ver 8

mediaActive:0 offhook:0 ringing:0 reset:0 reset_sent:0 paging 0 debug:0 caps:8

IP:10.15.0.11 1800 7960   keepalive 43 max_line 2

 button 1: dn 2  number 2002 CH1   IDLE

ephone-2 Mac:0050.0F55.928D TCP socket:[1] activeLine:0 REGISTERED in SCCP ver 12 and Server in ver 8

mediaActive:0 offhook:0 ringing:0 reset:0 reset_sent:0 paging 0 debug:0 caps:8

IP:10.15.0.12 1760 7960   keepalive 43 max_line 2

 button 1: dn 1  number 2001 CH1   IDLE

Place a call from from extension 2002 to 2001

 

Notice the status on the LCD displayed Ring Out (on 2002) and both became Connected after IP phone with extension 2001 picked up the call or was off-hook.

RtrPod1#show ephone

ephone-1 Mac:0002.17BB.33B0 TCP socket:[1] activeLine:1 REGISTERED in SCCP ver 12 and Server in ver 8

mediaActive:1 offhook:1 ringing:1 reset:0 reset_sent:0 paging 0 debug:0 caps:8

IP:10.15.0.11 1799 7960 keepalive 43 max_line 2

button 1: dn 2 number 2002 CH1 CONNECTED

Active Call on DN 2chan 1 :2002 10.15.0.11 1799 to 10.15.0.1 2000 via 10.15.0.11

G729 20 bytes no vad

Tx Pkts 0 bytes 0 Rx Pkts 0 bytes 0 Lost 0

Jitter 0 Latency 0 callingDn -1 calledDn -1 (media path callID 17 srcCallID 18)

ephone-2 Mac:0050.0F55.928D TCP socket:[1] activeLine:1 REGISTERED in SCCP ver 12 and Server in ver 8

mediaActive:1 offhook:1 ringing:1 reset:0 reset_sent:0 paging 0 debug:0 caps:8

IP:10.15.0.12 1760 7960 keepalive 43 max_line 2

button 1: dn 1 number 2001 CH1 CONNECTED

Active Call on DN 1chan 1 :2001 10.15.0.12 1760 to 10.15.0.1 2000 via 10.15.0.12

G729 20 bytes no vad

Tx Pkts 0 bytes 0 Rx Pkts 0 bytes 0 Lost 0

Jitter 0 Latency 0 callingDn -1 calledDn -1 (media path callID 17 srcCallID 18)


This is a packet capture wherein an IP phone (x2002) establishes an SCCP connection to CUCME (10.15.0.1) to route a call to x2001.

The two IP phones established a direct Real-time Transport Protocol (RTP) connection afterwards.