• CCME prior to 4.3 can only support 3 party adhoc conferences. Later version can now use DSP resources
• Software based adhoc conferencing allows only 3 parties
  • No configuration required
• Hardware conferences are
  • SIP phone cannot initiate hardware conference but they can join
  • Meet-me conference
    • Max 32 participants using only G.711
    • Max 16 participants using mixed mode G.711 and G.729a
    • Initiator press Meet me softkey on speaker phone, and enter the meet me number
    • Subsequent participants can just dial the meetme number.
  • Hardware adhoc conference
• Adhoc conference initiated by SIP phones are limited to three participants and do not use DSP resources
• The default max adhoc conferences is half the maximum of the platform e.g. 2811 max 16 default adhoc will be 8.

• Set the max number of three-party conferences
• The gain value is applied to VOIP and PSTN call joining the conference
  • This is use to adjust the gain level of an external call to provide more adequate volume

telephony-service
  max-conference <max-number> [gain -6|0|3|6]

• Maximum is hardware dependent but we can type the following to see the maximum

telephony-service
  max-conference ?

• Enable DSP farm services
• Only one voice card can be used to create dspfarms on a router
• Call Manager version must be 4.0 or above

voice-card 0
  dsp services dspfarm

• Configure CCME IP
• Enable SCCP

sccp local loopback 0
sccp ccm <ccme-ip> identifier 1 priority 1 version 6.0
sccp

• Defines dspfarm profile
• Specify supported codecs
• Max participants
  • Default is 8
  • max number of participants in each conference
  • based on the codec will influence the number of sessions
• Max conference session
  • max number of conference Meetme or Adhoc to support
  • must configure max participants before this as it will affect the max number of conference session that can be configured/supported.
• Associate dsparm profile to sccp application
• Unshut

dspfarm profile 5 conference
  codec g711ulaw
  codec g729aR8
  maximum conference-participants 16
  maximum sessions 4
  !
  associate application sccp
  no shutdown
!

• Define SCCP Group
• Bind SCCP group to the interface
• Associate CCME defined earlier
• Associate DSP farm profile and register to the CCME defined in previous step
  • The name CNFDSP1 must matched what's defined under telephony-service

sccp ccm group 10
  bind interface loopback 0
  !
  associate ccm 1 priority 1
  !
  associate profile 5 register CNFDSP1

• Enable hardware conference
• Max dspfarm services (transcoder, MTP and conferencing) that can register with the router
  • Specifies 3 if we are using transcoder, MTP and conferencing
• Configure the name that the conferencing resource is going to register as
  • The name must matched what's defined earlier in dspfarm profile

telephony-service
  conference hardware
  sdspfarm units 3
  sdspfarm tag 2 CNFDSP1

• Configure multiparty adhoc conference
• The octo-line will allow up to 8 participants
  • If more than eight are required, configure multiple DN with same number but difference preference to allow hunting
• One DN will only allow one adhoc conference
  • If we want to have multiple adhoc conference, then defined multiple DN numbers e.g. number 2142

ephone-dn 41 octo-line
  number 2141
  conference ad-hoc
  no huntstop
!
ephone-dn 41 octo-line
  number 2141
  conference ad-hoc
  huntstop
  preference 1

• Configure multiparty meet me conference
• The octo-line will allow up to 8 participants
  • If more than eight are required, configure multiple DN with same number but difference preference to allow hunting
• One DN will only allow one meet me conference
  • If we want to have multiple meetme conference, then defined multiple DN numbers e.g. number 2142

ephone-dn 15 octo-line
  number 2115
  conference meetme
  no huntstop
!
ephone-dn 16 octo-line
  number 2115
  conference meetme
  huntstop
  preference 1

• The main thing in here is to add softkey meetme, conflist — etc to the phone
• Configure IP Phone softkey and administrator options
• Only the conference creator can add parties to the conference
• Defined when the creator drop the call, what happen
• Define ephone with this template to be the adminsitrator
• Define softkey
  • RmLstC - remove last person joined e.g. useful when the call went to his voicemail.

ephone-template 3
  conference add-mode [creator]
  conference drop-mode [creator | local]
  conference admin
  !
  softkeys hold Resume Newcall Select Join
  softkeys Newcall Cfwdall Join Dnd ConfList RmLstC
  sottkeys seized Redial Endcall Cfwdall Meetme Pickup Gpickup
  softkeys connected Hold Endcall COnfrn LiveRcd ConfList RmLstC
!
ephone 4
  ephone-template 3

• Show current active conference

CCME_Router#sh telephony-service conference hardware 

Conference   Type        Active  Max  Peak    Master         MasterPhone   Last
                                                             cur(initial)      
=======================================================================================
7340         Meetme          3     8     3    7306 CIPC2     6     (  6)   7311 PLAZA79

7341         Ad-hoc          3     8     3    7303 PLAZA79   3     (  3)   7312        

CCME_Router#

• Verify adhoc and Meet-me conferencing.
• Show current status of ad hoc and Meet Me conference that are active or inactive.

CCME_Router#show ephone-dn conference 

type   active inactive  numbers
=======================================
Meetme    3       5      7340  
DN tags: 16

Ad-hoc    3       5      7341  
DN tags: 17

CCME_Router#

• Show current status of ad hoc and Meet Me conference ephone-dns
• Show conferences, type and max that can be supported

Router# show telephony-service conference hardware detail

• SCCP adhoc
• This only seems to work with software conference
• Default is that the initiator end call and disconnect all party
• The default behaviour without any parameter are
  • Hang up to leave the conference but keep the other two parties connected
  • Press the end call softkey to end the conference an disconnect all parties

ephone 1
  keep-conference [drop-last] [endcall] [local-only]

• SIP adhoc
• (Default) Allow the conference initiator to leave the call and the call to stay up
• Only one option is available.
  • Hang up to leave the conference but keep the other two parties connected
  • Press the end call softkey to end the conference an disconnect all parties

voice register pool 1
  keep-conference