IEEE members (only) can access the article online at http://207.127.135.8/ci1/private/1999/jul/Korpi.html
Paul Long Smith Micro Software, inc.
-----Original Message----- From: Kaynam Hedayat [SMTP:Kaynam_Hedayat@PICTEL.COM] Sent: Wednesday, July 21, 1999 6:52 PM To: ITU-SG16@mailbag.cps.intel.com; h323implementors@imtc.org Subject: Article on H.323 Supplementary Services
Hello everyone,
I would like to bring your attention to a very good article by Vineet Kumar and Markku Korpi on H.323 Supplementary Services. The article appears in the July issue of the IEEE Communications Magazine with the title "Supplementary Services in the H.323 IP Telephony Network".
Regards, Kaynam Hedayat
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Hello everybody..
This is regarding the ARQ message.There are two instances at which an enpoint EP1 will send ARQ message to the Gatekeeper.
Case - 1: Needs to send SETUP message to EP2
Case - 2: Received SETUP message from EP2.
In both these case what will be the value for following Information elements:
destinationInfo, destCallSignalAddress, destExtraCallInfo, srcInfo, srcCallSignalAddress.
I belv these are related to the source and destnation of the Q.931 call. Typically in the above case
Case - 1: Source is EP1 and Destination is EP2. Case - 2: Source is EP2 and Destination is EP1
In the above case srcInfo is mandatory in ARQ while the corresponding related Information Element sourceAddress is optional in the case of SETUP message. Typically in the Case-2: if the EP2 had not provide the alias information, there is no way by which the EP1 can provide the info in ARQ. Pls correct me if Iam wrong on the above mentioned point.
Any help on the above highlighted point will be useful..
Thanks
Raghu
Hi raghu, According to my understanding the srcInfo of ARQ and the sourceAddress of SETUP are not related. Considering case ii, when you send a ARQ (after receiving SETUP from EP2) ,the srcInfo will be relevant to EP1 and not to EP2.
Correct me I'am wrong.
-sanjeev
Raghu Nambiath wrote:
Hello everybody..
This is regarding the ARQ message.There are two instances at which an enpoint EP1 will send ARQ message to the Gatekeeper.
Case - 1: Needs to send SETUP message to EP2
Case - 2: Received SETUP message from EP2.
In both these case what will be the value for following Information elements:
destinationInfo, destCallSignalAddress, destExtraCallInfo, srcInfo, srcCallSignalAddress.
I belv these are related to the source and destnation of the Q.931 call. Typically in the above case
Case - 1: Source is EP1 and Destination is EP2. Case - 2: Source is EP2 and Destination is EP1
In the above case srcInfo is mandatory in ARQ while the corresponding related Information Element sourceAddress is optional in the case of SETUP message. Typically in the Case-2: if the EP2 had not provide the alias information, there is no way by which the EP1 can provide the info in ARQ. Pls correct me if Iam wrong on the above mentioned point.
Any help on the above highlighted point will be useful..
Thanks
Raghu
for list subscription instructions, send email to h323implementors-request@imtc.org with text "info"
Hello Sanjeev,
"Sanjeev" == Sanjeev MUDHOLKAR ssm@CHIPLOGIC.COM writes:
Sanjeev> According to my understanding the srcInfo of ARQ and the Sanjeev> sourceAddress of SETUP are not related. Considering case Sanjeev> ii, when you send a ARQ (after receiving SETUP from EP2) Sanjeev> ,the srcInfo will be relevant to EP1 and not to EP2.
Sanjeev> Correct me I'am wrong.
Sorry, but H.225.0 section 7.11.1 (ARQ fields description) states:
srcInfo: [...] When sending the ARQ to answer a call, srcInfo indicates the originator of the call.
Concerning case 2, this means that srcInfo is the address of EP2.
Regards. Fix.
PS: I think this discussion would be better placed on the h323implementors mailing list, don't you ?
Sanjeev> Raghu Nambiath wrote:
Hello everybody..
This is regarding the ARQ message.There are two instances at which an enpoint EP1 will send ARQ message to the Gatekeeper.
Case - 1: Needs to send SETUP message to EP2
Case - 2: Received SETUP message from EP2.
In both these case what will be the value for following Information elements:
destinationInfo, destCallSignalAddress, destExtraCallInfo, srcInfo, srcCallSignalAddress.
I belv these are related to the source and destnation of the Q.931 call. Typically in the above case
Case - 1: Source is EP1 and Destination is EP2. Case - 2: Source is EP2 and Destination is EP1
In the above case srcInfo is mandatory in ARQ while the corresponding related Information Element sourceAddress is optional in the case of SETUP message. Typically in the Case-2: if the EP2 had not provide the alias information, there is no way by which the EP1 can provide the info in ARQ. Pls correct me if Iam wrong on the above mentioned point.
Any help on the above highlighted point will be useful..
-- Francois-Xavier KOWALSKI -- tel:+33.4.76.14.63.27 fax:+33.4.76.14.16.86 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ mailto:fxk@hptnodur.grenoble.hp.com -- B1N2D1 Telecom Engineer/HUGO Project/Project Center/TID/HP Grenoble
Could somebody please guide me to the h323implementors mailing list?
Thank you in advance, Alex Chatilov achatilov@msn.com
----- Original Message ----- From: Francois-Xavier KOWALSKI fxk@TIDWEB.GRENOBLE.HP.COM To: ITU-SG16@MAILBAG.INTEL.COM Sent: Wednesday, August 04, 1999 6:42 AM Subject: Re: ARQ Message Information ELement values
Hello Sanjeev,
"Sanjeev" == Sanjeev MUDHOLKAR ssm@CHIPLOGIC.COM writes:
Sanjeev> According to my understanding the srcInfo of ARQ and the Sanjeev> sourceAddress of SETUP are not related. Considering case Sanjeev> ii, when you send a ARQ (after receiving SETUP from EP2) Sanjeev> ,the srcInfo will be relevant to EP1 and not to EP2.
Sanjeev> Correct me I'am wrong.
Sorry, but H.225.0 section 7.11.1 (ARQ fields description) states:
srcInfo: [...] When sending the ARQ to answer a call, srcInfo indicates the originator of the call.
Concerning case 2, this means that srcInfo is the address of EP2.
Regards. Fix.
PS: I think this discussion would be better placed on the h323implementors mailing list, don't you ?
Sanjeev> Raghu Nambiath wrote:
Hello everybody..
This is regarding the ARQ message.There are two instances at which an enpoint EP1 will send ARQ message to the Gatekeeper.
Case - 1: Needs to send SETUP message to EP2
Case - 2: Received SETUP message from EP2.
In both these case what will be the value for following Information elements:
destinationInfo, destCallSignalAddress, destExtraCallInfo, srcInfo, srcCallSignalAddress.
I belv these are related to the source and destnation of the Q.931
call.
Typically in the above case
Case - 1: Source is EP1 and Destination is EP2. Case - 2: Source is EP2 and Destination is EP1
In the above case srcInfo is mandatory in ARQ while the corresponding related Information Element sourceAddress is optional in the case of
SETUP
message. Typically in the Case-2: if the EP2 had not provide the
alias
information, there is no way by which the EP1 can provide the info in
ARQ.
Pls correct me if Iam wrong on the above mentioned point.
Any help on the above highlighted point will be useful..
-- Francois-Xavier KOWALSKI -- tel:+33.4.76.14.63.27 fax:+33.4.76.14.16.86
mailto:fxk@hptnodur.grenoble.hp.com -- B1N2D1 Telecom Engineer/HUGO Project/Project Center/TID/HP Grenoble
participants (5)
-
Alex Chatilov -
Francois-Xavier KOWALSKI -
Paul Long -
Raghu Nambiath -
SSMudholkar