In such a case SIP client should send ACK to MGC to complete the INVITE request for starting Media flow or Not.
From: ashok kumar [mailto:[email protected]] Sent: Thursday, March 31, 2011 11:02 AM To: Md Faruk Apel Chowdhury Cc: [email protected] Subject: Re: [Sip-implementors] Does ISUP have any equivalent for ACK message There is no equivalent message for ACK in ISUP and the call gets established after ANM on the PSTN side. On Thu, Mar 31, 2011 at 12:26 PM, Md Faruk Apel Chowdhury <[email protected]<mailto:[email protected]>> wrote: Call from SIP to PSTN SIP client-----------------MGC---------------------PSTN ----------INVITE----> ----------IAM-------------> ----------180---------------------------ACM---------------------- ----------200---------------------------ANM--------------- ----------->ACK -----------> ------What is in ISUP message for ACK Is there anything to send towards PSTN for ACK? Appreciate for prompt response from anybody. ________________________________ The content of this email together with any attachments, statements and opinions expressed herein contains information that is private and confidential are intended for the named addressee(s) only. If you are not the addressee of this email you may not copy, forward, disclose or otherwise use it or any part of it in any form whatsoever. If you have received this message in error please notify [email protected]<mailto:[email protected]> by email immediately and delete the message without making any copies. _______________________________________________ Sip-implementors mailing list [email protected]<mailto:[email protected]> https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors ________________________________ The content of this email together with any attachments, statements and opinions expressed herein contains information that is private and confidential are intended for the named addressee(s) only. If you are not the addressee of this email you may not copy, forward, disclose or otherwise use it or any part of it in any form whatsoever. If you have received this message in error please notify [email protected] by email immediately and delete the message without making any copies. _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
