Re: [Sip-implementors] direct-ip-to-ip calling in public ip

Hi Mahudeswarnan, Yes, the direct Ip call will succeed. Thanks and Regards, Rajat Chandna From: sip-implementors-boun...@lists.cs.columbia.edu [sip-implementors-boun...@lists.cs.columbia.edu] On Behalf Of Mahudeswaran [mahudeswar...@acqueon.com] Sent

Re: [Sip-implementors] PRACK Message

MUST place the answer in the 2xx to the PRACK." Thanks and Regards, Rajat Chandna From: sip-implementors-boun...@lists.cs.columbia.edu [sip-implementors-boun...@lists.cs.columbia.edu] On Behalf Of Verma, Salil (NSN - IN/Gurgaon) [salil.ve...@n

Re: [Sip-implementors] Response code sent by proxy to caller when UAS not registered

ce at this proxy that does not exist, the proxy MUST return a 404 (Not Found) response." Thanks and Regards, Rajat Chandna From: sip-implementors-boun...@lists.cs.columbia.edu [sip-implementors-boun...@lists.cs.columbia.edu] On Behalf Of Romel

Re: [Sip-implementors] How may SIP systems adopt 'B2BUA' ?

Hi, Some common examples of Sip B2BUA's that I can think include: Session Border Controllers(SBC's) - Topology hiding SIP Application Servers(AS) performing tasks such as Voice Quality Assurance, transcoding, charging etc Thanks and Regards, Raj

Re: [Sip-implementors] 18x response after OA complete?

/Answer are reserved. Thanks and Regards, Rajat Chandna From: sip-implementors-boun...@lists.cs.columbia.edu [sip-implementors-boun...@lists.cs.columbia.edu] On Behalf Of Nauman Sulaiman [nauman762-h...@yahoo.co.uk] Sent: Wednesday, June 29, 2011 4:16 AM

Re: [Sip-implementors] Is PRACK and UPDATE mandatory in some use cases

Hi Nauman, Generally, the combination of PRACK / UPDATE is used in "precondition" call scenarios.For an example, you can look into basic IMS call scenarios. Thanks and Regards, Rajat Chandna From: sip-implementors-boun...@lists.cs.columbia

Re: [Sip-implementors] 100rel without direct reachability

, the PRACK MUST contain the same Route headers as the request. And here is a old thread from Sip implementors: http://www.atm.tut.fi/list-archive/sip/msg07339.html May be this could be of some help. Thanks and Regards, Rajat Chandna From: sip

Re: [Sip-implementors] Reg: ACK for 503

Hi, Adding onto Leo's point As ACK for a negative response is a Hop By Hop request,thus not sending ACK from UAC can lead to retransmissions from UAC's next hop proxy(if statefull) towards UAC. Rajat Chandna From: sip-impleme

Re: [Sip-implementors] which parameter is not allowed in Req-URI

et in case of Request Forwarding. This will ensure that the proxy is not breaking any end to end functionality because it can be a case where your upstream element required those params for the Request URI processing. So it's better to be on safe side :). Thanks and Regards, Rajat Chandn