Cisco 8831

[Alfredo Bosca Bataller]

I have bought 2 Cisco 8831 Phones but not is possible keep more of 2 calls. In other words not is possible keep a multiconference. I have configured the Directory Number to permit a maximum of calls 6, but still not works.

[Jaime Valencia]

The number of people you can have in a conference is not related to the maximum number of calls a phone can have, that's set in your CFB and if using CUCM, the conference related parameters.

[Alfredo Bosca Bataller]

Hi,

I have seen that on the router gateway is not configured the DSPfarm and this feature is necessary to conferencing. I have seen that the common configuration is create with DSPfarm profile and associated SCCP with DSPfarm like this:

sccp local GigabitEthernet0/0
sccp ccm 10.126.71.21 identifier 101 version 4.1
sccp ccm 10.126.222.21 identifier 102 version 4.1
sccp ip precedence 3
sccp
!
sccp ccm group 121
 associate profile 133 register MTP_HW_UKBI_R8
 associate profile 132 register MTP_HW_UKBI_AL
 associate profile 131 register MTP_HW_UKBI_UL
 associate profile 111 register CFB_HW_UKBI01
 associate profile 121 register XCODE_HW_UKBI01
!
dspfarm profile 121 transcode  
 description Birmingham Hardware transcoder
 codec g711ulaw
 codec g711alaw
 codec g729ar8
 codec g729abr8
 codec pass-through
 maximum sessions 4
 associate application SCCP
 !
dspfarm profile 111 conference  
 codec g711ulaw
 codec g711alaw
 codec g729ar8
 codec g729abr8
 codec g729r8
 codec g729br8
 associate application SCCP
 !
dspfarm profile 131 mtp  
 codec g711ulaw
 codec pass-through
 maximum sessions hardware 4
 associate application SCCP
 !
dspfarm profile 132 mtp  
 codec g711ulaw
 codec pass-through
 maximum sessions hardware 4
 associate application SCCP
 !
dspfarm profile 133 mtp  
 codec g711ulaw
 codec pass-through
 maximum sessions hardware 4
 associate application SCCP
 !

But in my case the difference is the Cisco Spider 8831 is working with the SIP protocol instead of SCCP (by default). I need to know if the configuration on Router gateway is different...

Thanks in advance!

[Jaime Valencia]

DSPfarms can only be handled via SCCP, that has nothing to do with whether you have a SIP trunk, H.323 or MGCP for TDM/SIP trunks or CUCM.

[Alfredo Bosca Bataller]

OK,

However I want to Associating a DSP Farm Profile to a Cisco Unified Communications Manager Group. For this I need to create register device-name. But i don't know how create this register on the callmanager.

Router(config-sccp-ccm)# associate profile register abgz12345

Thanks,

[Jaime Valencia]

There's plenty of material on the topic on cisco.com if you simply search.

http://www.cisco.com/c/en/us/support/docs/voice-unified-communications/unified-communications-manager-callmanager/91863-trans-conf-iosgw-ccm.html

[Nadav]

Just adding a bit to Jaime's correct response:  The maximum number of audio streams your UCM can handle at a time is 128. This includes ad-hoc and meetme.

You configure the maximum ad-hoc participants under the service parameter called "Maximum Ad Hoc Conference". Keep in mind not to make this number too high, since each time you use the software conference bridge it'll provision for the maximum number of participants. So if you put the maximum (64), a conference of 3 will still provision 64 out of a possible 128 your CUCM can provide.

An excellent source on the subject of conference bridging is:

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/10_0_1/ccmsys/CUCM_BK_SE5FCFB6_00_cucm-system-guide-100/CUCM_BK_SE5FCFB6_00_cucm-system-guide-100_chapter_011000.html

[Alfredo Bosca Bataller]

In this case the CFB and MTP are registered OK and the CFB settings seems property. I think that the issue is with the SIP protocol because the rest of phones are working with SCCP protocol.

Thanks in advance!

[Alfredo Bosca Bataller]

On the 8831 phone appear: "conf list is not active". I think that is necessary to add new configuration on the gateway because theses phones are working as SIP protocol.

Thanks,