On the last versions of CallManager Express you can register third party

SIP phone as a normal extension of your PBX.

What following is an example for configuring Cisco/Linksys WIP310 on CCME.

WARNING!

As specified on the datasheet with 2px font this wireless phone don't support

access-point roaming

When you register SIP phone on a CME with other SCCP device you can't use the same range for directory numbers.

In then example our PBX have IP 10.0.0.1, the DN is 1000 like username and password.

CCME Configuration

voice service voip
 clid network-provided
 allow-connections h323 to h323
 allow-connections h323 to sip
 allow-connections sip to h323
 allow-connections sip to sip
 supplementary-service h450.12
 no supplementary-service sip moved-temporarily
 no supplementary-service sip refer
 fax protocol pass-through g711alaw
 modem passthrough nse codec g711alaw
 sip
  registrar server expires max 600 min 60
!

voice register global
 mode cme
 source-address 10.0.0.1 port 5060
 max-dn 20
 max-pool 10
 authenticate register
 authenticate realm cme
 tftp-path flash:
 file text
!

voice register dn  1
 number 1000
 allow watch
 name WIP310
 no-reg
 label WIP310
!

voice register pool  1
 id mac 0000.0000.0000
 number 1 dn 1
 presence call-list
 dtmf-relay sip-notify
 username 1000 password 1000
 codec g711alaw
!

WIP310 Configuration

 

Proxy: 10.0.0.1

Outbound Proxy: 10.0.0.1

Register: yes

Use OB Proxy In Dialog: yes

Use Outbound Proxy: no

Display Name: 1000

User ID: 1000

Use Auth ID: no