Media resources in cucme & cucm

[techguy]

Hi,

I have one site configured as cme and rest all the sites are registered in one cucm. Now transcodoing, conferecing & MTP configuration on cme router would be poiting to cucm or would remain for only local phones in cme.

voice-card 0

dspfarm

dsp services dspfarm

!

voice class codec 1

codec preference 1 g711ulaw

codec preference 2 g711alaw

codec preference 3 g729r8

!

interface Loopback105

ip address 10.1.184.X 255.255.255.192

!

sccp local Loopback105

sccp ccm 10.50.X.X (cucm ip) identifier 1 version 7.0

sccp ccm 10.50.X.X (cucm ip) identifier 2 version 7.0

sccp

!

sccp ccm group 1

associate ccm 1 priority 1

associate ccm 2 priority 2

associate profile 3 register abc_MTP

associate profile 2 register abc_XCODE

associate profile 1 register abc_CONF

!

dspfarm profile 2 transcode

codec g729abr8

codec g729ar8

codec g711alaw

codec g711ulaw

maximum sessions 2

associate application SCCP

!

dspfarm profile 1 conference

codec g711ulaw

codec g711alaw

codec g729ar8

codec g729abr8

codec g729r8

codec g729br8

maximum sessions 1

associate application SCCP

!

dspfarm profile 3 mtp

codec g711ulaw

maximum sessions software 10

associate application SCCP

!

telephony-service

no auto-reg-ephone

max-ephones 55

max-dn 55

ip source-address 10.1.184.65 port 2000

[Carlo Poggiarelli]

Hi.

If you have defined CME conference bridge and mtp resources as Hardware conference bridge and MTP on CUCM and you have associated them to a MRG MRGL and Device Pool, these resources can be also used by CUCM registered ip phones.

HTH

Regards

Carlo

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"The more you help the more you learn"

[islam.kamal]

Hi

Based on your configuration , these resources will point to your CUCM only.

1-You can make the resources of your CME is only serve registered Phones on CME. with the same configuratio as you do above , with some modifications, as below;-

sccp local Loopback105

sccp ccm   10.1.184.65 255.255.255.0 identifier 1 version 7

sccp

sccp ccm group 1

associate ccm 1 prio 1

telephony-service

sdspfarm units 3

sdspfarm transcode sessions 4

sdspfarm tag 1 abc_CONF

sdspfarm tag 2 abc_XCODE

sdspfarm tag 3 abc_MTP

2- If you use the resources of CME to CUCM , just register Transcode ,MTP and conference bridge to your CUCM .Create MRG and MRGL and assign MRGL to device pools.

Thank you

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[amansin74]

Hi omerpal,

Where to register DSP resources depends on the requirement.

If a site is CME and CUCM is connected Via WAN, DSP resources should register to CME.

Just assume what will happen if WAN fails. These resources will get unusable.

If you are Using MTP for fast start/ early offer calls from CUCM. You should register this MTP with CUCM.

Conferencing will not work during WAN failure if Conf. bridge is registered to CUCM.

Register these resources to CME using ommands suggested by islam.

[Ayodeji Okanlawon]

+5 to Carlo, Islam and Aman..Excellent answers to both. I just want to add to their ideas. Currently your ccme phones will not be able to use the media resources registered to CUCM. Your cucm registered phones can and will use the media resources that you have configured on ccme and registered to cucm. You will need to configure media resources for ccme registered phones as shown by Islam

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"opportunity is a haughty goddess who waste no time with those who are unprepared"

[Carlo Poggiarelli]

Thank you for nice rating Aok...

But you forgot to rate answer

Carlo

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"The more you help the more you learn"

[techguy]

Thanks all for your replies.

For cme-cucm , it's agreed to configure media resources in cme. But in h323 gateways where srst is configured what could be configuration. I mean to say media resources shall be configured in cucm or cme.

[Ayodeji Okanlawon]

On your srst gateway you only have one option, whic is to configure media resources to register to cucm. You cant use media resources outside of the ccme gateway itself. It has to b e co resident with ccme.

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"opportunity is a haughty goddess who waste no time with those who are unprepared"

[islam.kamal · Accepted solution]

Hi Omer

You can use resources of your CME to register for your CUCM and when your SRST start to work , your resources can be used on SRST. Please find the below:-

sccp local Loopback105

sccp ccm 10.50.X.X (cucm ip) identifier 1 version 7.0

sccp ccm 10.50.X.X (cucm ip) identifier 2 version 7.0

sccp ccm   10.1.184.65 255.255.255.0 identifier 3 version 7

sccp

sccp ccm group 1

associate ccm 1 priority 1

associate ccm 2 priority 2

assocuate ccm 3 prio 3

switback method immediate

switchover method immediate

swithback interval 3

telephony-service

sdspfarm units 3

sdspfarm transcode sessions 4

sdspfarm tag 1 abc_CONF

sdspfarm tag 2 abc_XCODE

sdspfarm tag 3 abc_MTP

As you see on my configuration , i set priortiy for your CUCM than CME. When the link is ok between your CUCM and CME , all resources will be ok for your CUCM. During SRST , the resources will be register for your CME.

Thank you

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[Ayodeji Okanlawon]

Carlo my bad! I rated Islam's post twice. I have rated your post

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"opportunity is a haughty goddess who waste no time with those who are unprepared"

[techguy]

In a nutshell, We need Media Resources in both ways.

I can understand that in cucm scenario, transcoding can be used to convert G.711 into G.729 since CUCM will be across the wan link.

In CUCME, do we still need transcoding? I need to understand MTP requirement in CUCME too

Thanks

[islam.kamal]

Hi

1- If you need to use transcoding to convert between Codecs, so you will still need that during SRST.Based on that you will still use the resources on the both CUCM or CUCME

2- Look Transcoder is as MTP but needs  hardware resources from your routers.

The best scinario to regiter all resources for your 2 X CUCM as high priority , and during SRST it will register to your CUCME. Please find above my configuration for this scinario,

Thank you

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[islam.kamal]

Hi

Let me share with you some details :-

1- you have transcoder , to transcode between codecs .

2- conference for (ad hoc or meetme).

3-MTP ( For RSVP) , if you need to guarantee bandwidth between sites.

1- Based on your configuration , all of above required resouced from your router.Based on that we will register all of above to your Pub and Sub on your gateway.

2-Quesyion here , you will enable SRST?. If you enable SRST without registering these resource to your SRST IP or CME IP , the phones will resgiter but  without (transcoding, confernce , MTP) , so you have to register these resources to your CUCME , so all will work as same on CUCM up or SRST up.

Thank you

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[islam.kamal]

Hi

Some defines for media resources , to know which will be used for you:-

Media Termination Point

•Define Supplementary Services.

•Used when SCCP communicate to SIP Devices

•H323 v1 communicate with v2.

Music On Hold

•Provide music when call is on hold

Conference

•Provide resources when party initiate a conference sessions

Transcoding

•Converts codec from G.711  &G.729

Thank you

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