[SIPForum-discussion] 501 not implemented

[Shiva Kumar]

501 not implemented tells that any of the headers your server might not
recognise as its not implemented. So please check which all headers Your
server supports may be any of the P headers might not be supported. This
was just an example i gave but check against your server

Regards,
Shiva

On Saturday, December 17, 2011, aleksey.f <alexej.f at gmail.com> wrote:
> I think you should correct URI in From and P-Asserted-Identity headers
> to excluding the symbol "+".
>
> 2011/12/12 Tshepo Kekana <tkekana0 at gmail.com>:
>> Hi
>>
>> can someone assist, I am getting a 501 from the ISP when trying to place
a
>> calls from one specific customer.
>>
>> I checked the invite but i don't seem to find what is wrong with it.
>>
>>
>> INVITE sip:27828863266 at 41.208.52.7:5060;user=phone SIP/2.0
>>
>> Via: SIP/2.0/UDP 66.8.114.20:5060;branch=z9hG4bKjgcral30bgo0hqsqs720.1
>>
>> From: "FP Hillbrow
>> (K)"<sip:+27877402193 at 196.31.51.15
;user=phone>;tag=1257524672-1323349529033-
>>
>> To: <sip:27828863266 at 196.31.51.4:5060;user=phone>
>>
>> Call-ID: BW150529033081211-2088874824 at 196.31.51.15
>>
>> CSeq: 249800933 INVITE
>>
>> Contact: <sip:66.8.114.20:5060;transport=udp>
>>
>> P-Asserted-Identity: "FP Hillbrow
>> (K)"<sip:+27877402193 at 196.31.51.15;user=phone>
>>
>> Privacy: none
>>
>> Supported: 100rel
>>
>> Allow: ACK,BYE,CANCEL,INFO,INVITE,OPTIONS,PRACK,REFER,NOTIFY,UPDATE
>>
>> X-BroadWorks-DNC:
>> network-address="sip:+27877402193 at 196.31.51.15;user=phone";user-id="
0877402193 at 192.168.100.1"
>>
>> Accept:
>>
application/media_control+xml,application/sdp,application/x-broadworks-call-center+xml,multipart/mixed
>>
>> Max-Forwards: 13
>>
>> Content-Type: application/sdp
>>
>> Content-Length: 219
>>
>>
>>
>> regards,
>>
>> Tshepo
>>
>>
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