[SIPForum-discussion] Call Failed with SIP 486 Busy for G.723 codec

[Nitin Kapoor]

Hi Amit,

As other said, 486 busy here, has nothing to do with codec negotiation.
Ideally this thing comes when either remote entity is unwilling or unable to
take the calls... And since TDM gateway is involved then it can be a code
mapping issue aswell as sam already mentioned.

You can check the Reason header or can check what ISDN code you are
getting....or if you can share the ethereal traces for the same.

Thanks,
Nitin Kapoor

On 5 October 2010 18:44, amit salunkhe <amitsalunkhe21 at gmail.com> wrote:

> Hi All
>
> Can anybody tell me is this possible if we orginate call with G723 codec
> for PLMN/PSTN mobile number, then that call will failed from destination
> side within 1/2 ring with SIP response 486 Busy?
>
> Here call flow is described below.
>
> USEE A---->SBC1----->SBC2------>TDM g/w1-------->mobile MSC--------->USER B
>
>
> Please lte me know what aree the different reasons for such call failure
> within 1 or 1/2 ring
>
>
> Regards
> Amit--
>
>
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