[Users] (PR)ACK problem with uac_replace_from

[Jeff Williams]

Bogdan,

Thanks for pointing that out. It is not actually the Cisco gateway but
our billing/LCR platform which is downsizing the field. For those
interested, I would recommend avoid Sysmaster's VoiceMaster for any SIP
applications. We have had many RFC compliance issues (like them routing
on the To filed, rather than the RURI) and their support has been clueless.

Regards,
Jeff Williams

Bogdan-Andrei Iancu wrote:
> Hi Jeff,
>
> it looks like the Cisco-SIPGateway/IOS-12.x is a bit broken....
>
> Here is the RR hdr added by OpenSER (in INVITE):
>   Record-Route:
> <sip:202.74.164.44;lr=on;ftag=1790577941;nat=yes;vsf=AAAAAAYJCQIKCQkACXAwAQYIFkAWRxMAA2UuY29tO3VzZXI9cGhvbmU->
>
>
> and here is what CISCO mirrors (in 180 reply):
>    Record-Route:
> <sip:202.74.164.44;lr=on;ftag=1790577941;nat=yes;vsf=aaaaaayjcqikcqkacxawaqyifkawrxmaa2uuy29to3vzzxi9cghvbmu->
>
>
> as you can see, the CISCO does not properly mirror the parameters as
> received (as the RFC says) and converts to lower case.
> As the vsf is a B64 encoding, it is case sensitive and it gets broken
> .....
>
> try to upgrade the firmware or submit a bug at CISCO.
>
> regards,
> bogdan
>
> Jeff Williams wrote:
>
>> I seem to have an issue with uac_replace_from.
>>
>> I am using openser as a media proxy. For invites I replace the numbers
>> with leading 0's with 61 for Australia and forward the call to our LCR
>> box which then forwards the call to the correct voice to pstn gateway. I
>> am trying to use uac_replace_from to set the from address so the
>> callerid appears correct on the outgoing calls.
>>
>> This seems to work fine for the INVITE request, but on subsequent PRACKs
>> and ACKs (which just get loose routed), something strange happens to the
>> from address.
>>
>> On invite, the From get re-written:
>>
>> From: Jeff <sip:610089001 at proxy.sipone.com;user=phone>;tag=1790577941
>> to
>> From: Jeff <sip:0892209080 at sipone.com>;tag=1790577941
>>
>> For the PRACKs and ACKs, this happens:
>>
>> From: Jeff <sip:610089001 at proxy.sipone.com;user=phone>;tag=1790577941
>> to
>> From: Jeff
>> <\032\317\352S\232\222B\230\234K\231*BV\300\030\303\332\ah\303\306i\365\005\016\200\250\000\000\230\016\200\252j\200\002`\000\000\016>;tag=1790577
>>
>> 941
>>
>> There shouldn't be anything happening to the From address on the
>> (PR)ACKs at all.
>>
>> Anyone have any ideas?
>>
>> I have attached a ethereal dump of the call setup.
>>
>> Jeff
>>  
>>
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>>
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>