[cisco-voip] No ring back Tone For Switched off Mobile

[Sreekanth]

Did you make the change on the CUCM SIP profile also? Have you taken a
debug ccsip message from the CUBE to see if the PRACK from CUCM contains
the phone's IP address and port number?

On 24 May 2016 at 13:38, Asim Mekki Basheer <asim_323 at hotmail.com> wrote:

> i have added the below cmd but still not working ( MTP) not checked
>
>
> Regards
>
>
>
> ------------------------------
> Subject: Re: [cisco-voip] No ring back Tone For Switched off Mobile
> To: sreenara at cisco.com; asim_323 at hotmail.com
> CC: cisco-voip at puck.nether.net
> From: adamgfrankel at gmail.com
> Date: Mon, 23 May 2016 12:25:48 -0400
>
>
> Also ->
> -Enable Early Offer (MTP if needed) on the SIP profile (CUCM 8.5+) or
> Effort Early Offer (no MTP) on the SIP Profile (CUCM 10.5+)
>
> http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/rel_notes/10_5_1/CUCM_BK_CE15D2A0_00_cucm-release-notes-1051/CUCM_BK_CE15D2A0_00_cucm-release-notes-1051_chapter_01.html#CUCM_TP_B8E6026A_00
>
> -MTP Required (any version)
>     MTP Required limits you to a single codec in the outbound offer and
> ties your max permitted calls to the number of MTP Resources in your MRGL.
>
> Sreekanth's suggestion is the simplest to fix your specific problem, but
> early offer usually works better overall with most Service providers.
>
> HTH,
> --
> Adam
>
> On 5/23/2016 11:23 AM, Sreekanth Narayanan (sreenara) wrote:
>
> This happens when the CUBE receives the prompt from the ITSP over RTP and
> is not aware of where it has to stream this prompt because CUCM does
> Delayed Offer by default. So Cube doesnt have the phone's IP address.
>
> You can fix this by forcing CUCM to send provisional acknowöedgement by:
> 1. putting voice-class sip rel1xx require "100rel" on the dial peers
> facing CUCM, and
> 2. Under sip profile of sip trunk facing CUBE, change the Rel1xx parameter
> to Send Prack for all 1xx messages.
>
>
>
> Sreekanth
>
> Sent from a phone.
>
>
> -------- Original message --------
> From: Asim Mekki Basheer <asim_323 at hotmail.com> <asim_323 at hotmail.com>
> Date: 5/23/16 4:37 PM (GMT+05:30)
> To: cisco-voip at puck.nether.net
> Subject: [cisco-voip] No ring back Tone For Switched off Mobile
>
> Hi
>
>
> The issue is, when call out to a Switched off mobile phone, the IP Phone
> can't hear the correct ringback tone either Busy Tone nor Service
> Provider's Ringtone, it hears normal Ringback tone same as when the mobile
> phone switched on instead
>
> The call flow:
>
> IP Phone -- CUCM -- SIP Trunk--  CUBE --SIP Trunk -- Service Provider .
>
>
> (CUCM 7.5,  VGW (2921)
>
>
> Regards
>
>
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>
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