7 Feb
2005
7 Feb
'05
1:09 a.m.
Hi,
Being one of those who tend towards open source, I'm trying to put forward ser for use
within my current project as, from my reading, it seems to have most of the features I
think we're going to need. Problem is, before I've had a chance to get it in and
play with it, there's a paper sift going on which may see it being shelved before I
get a chance to even propose it. :(
I realise it's entirely unforgivable, netiquette-wise, but I was hoping if I posted
the list of criteria I was looking at whether someone could help confirm or deny what
I've cobbled together wrt ser. Any links to more information on the web would be
ideal.
Any help at all would be gratefully received!
Many thanks,
Peter.
1) Support for SIP - (preferably 3GPP ISC interface)
- Obviously SIP is supported but I can't see any explicit mention in the docs wrt
to 3GPP ISC .. ? Has ser been developed with this in mind?
2) Provide flexible application run time support in terms of standard / well-defined API
sets such as SIP servlets
- As ser is written in C, it's obviously not exposing SIP servlets internally, but
I can't seem to find a specific API specificiation. I think it sounds like
applications are created as C modules which plug into ser. Is that right (I'm not a C
developer, so any clarification appreciated)? Is it a ser-properietary interface or
something that follows a particular standard?
3) support carrier grade non functional requirements e.g. %age availability, multi-site
installation, latency, throughputs etc.
- I can't see any specific claims for reliability, or any info on how to deal with
redundancy etc. Has this been looked at before?
4) Any interfaces that can be exposed to application logic hosted on a remote platform in
an untrusted environment - e.g. a Java RMI, Web Services etc.
- Does ser expose anything else, other than SIP? How would a third party application
running on, let's say for argument's sake, a J2EE application running on a
separate JBoss server? Would a C module need to be written and plugged into ser to
expose, say web services? Has anything like that been done already?
5) Application Developer support / tools
- Is there anything like a forum or tools to aid a module developer?
6) OSS integration
- Is there any?
7 Feb
7 Feb
3:46 a.m.
Hi Peter!
I can answer to 1 as I have implemented the ISC. The ISC, as I see
it, it's very much SIP compliant. And well, to put it simple, it works.
Now about whether ser was "developed with this is mind", ser is out for
quite some time and I don't really think that anyone thought about
adapting the core for ISC, nor it is needed as ISC is basically standard
SIP and any S-CSCF implementation should be able to communicate with any
AS implementation out there, provided that they both "speak"
standard-SIP as they should.
P.S. By ISC I understand just the communication betweent he S-CSCF and
the AS. Controlling it by means of Initial Filter Criteria is another
thing and gets a little more complicated, but can be resolved by a ser
module.
peter.3.edwards(a)bt.com wrote:
Hi,
Being one of those who tend towards open source, I'm trying to put forward ser for use
within my current project as, from my reading, it seems to have most of the features I
think we're going to need. Problem is, before I've had a chance to get it in and
play with it, there's a paper sift going on which may see it being shelved before I
get a chance to even propose it. :(
I realise it's entirely unforgivable, netiquette-wise, but I was hoping if I posted
the list of criteria I was looking at whether someone could help confirm or deny what
I've cobbled together wrt ser. Any links to more information on the web would be
ideal.
Any help at all would be gratefully received!
Many thanks,
Peter.
1) Support for SIP - (preferably 3GPP ISC interface)
- Obviously SIP is supported but I can't see any explicit mention in the docs wrt
to 3GPP ISC .. ? Has ser been developed with this in mind?
2) Provide flexible application run time support in terms of standard / well-defined API
sets such as SIP servlets
- As ser is written in C, it's obviously not exposing SIP servlets internally, but
I can't seem to find a specific API specificiation. I think it sounds like
applications are created as C modules which plug into ser. Is that right (I'm not a C
developer, so any clarification appreciated)? Is it a ser-properietary interface or
something that follows a particular standard?
3) support carrier grade non functional requirements e.g. %age availability, multi-site
installation, latency, throughputs etc.
- I can't see any specific claims for reliability, or any info on how to deal with
redundancy etc. Has this been looked at before?
4) Any interfaces that can be exposed to application logic hosted on a remote platform in
an untrusted environment - e.g. a Java RMI, Web Services etc.
- Does ser expose anything else, other than SIP? How would a third party application
running on, let's say for argument's sake, a J2EE application running on a
separate JBoss server? Would a C module need to be written and plugged into ser to
expose, say web services? Has anything like that been done already?
5) Application Developer support / tools
- Is there anything like a forum or tools to aid a module developer?
6) OSS integration
- Is there any?
------------------------------------------------------------------------
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FOKUS/MOBIS
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Web www.fokus.fraunhofer.de
Computers are not intelligent. They only think they are.
-------------------------------------------------------
12:37 p.m.
On 07-02 00:09, peter.3.edwards(a)bt.com wrote:
Hi,
Being one of those who tend towards open source, I'm trying to put forward ser for
use within my current project as, from my reading, it seems to have most of the features I
think we're going to need. Problem is, before I've had a chance to get it in and
play with it, there's a paper sift going on which may see it being shelved before I
get a chance to even propose it. :(
I realise it's entirely unforgivable, netiquette-wise, but I was hoping if I posted
the list of criteria I was looking at whether someone could help confirm or deny what
I've cobbled together wrt ser. Any links to more information on the web would be
ideal.
Any help at all would be gratefully received!
Many thanks,
Peter.
1) Support for SIP - (preferably 3GPP ISC interface)
- Obviously SIP is supported but I can't see any explicit mention in the docs wrt
to 3GPP ISC .. ? Has ser been developed with this in mind?
SIP yes, 3GPP ISC no.
2) Provide flexible application run time support in
terms of standard / well-defined API sets such as SIP servlets
- As ser is written in C, it's obviously not exposing SIP servlets internally,
but I can't seem to find a specific API specificiation. I think it sounds like
applications are created as C modules which plug into ser. Is that right (I'm not a C
developer, so any clarification appreciated)? Is it a ser-properietary interface or
something that follows a particular standard?
There is nothing comparable to SIP Servlets, SER is not a servlet
container, but a SIP message mangler with the possibility to keep
transaction state.
SER modules are written in C and can access SER internals directly.
Each module can export function that the administrator can then call
in the configuration file.
There is no particular standard for this, it is very similar to the Apache
module API.
3) support carrier grade non functional requirements
e.g. %age availability, multi-site installation, latency, throughputs etc.
- I can't see any specific claims for reliability, or any info on how to deal with
redundancy etc. Has this been looked at before?
Yes, high availability extensions are available under comercial
license from iptel.org.
4) Any interfaces that can be exposed to application
logic hosted on a remote platform in an untrusted environment - e.g. a Java RMI, Web
Services etc.
No.
- Does ser expose anything else, other than SIP?
How would a third party application running on, let's say for argument's sake, a
J2EE application running on a separate JBoss server? Would a C module need to be written
and plugged into ser to expose, say web services? Has anything like that been done
already?
No, that is not possible. SER is not an application server, it is a
sip proxy.
5) Application Developer support / tools
- Is there anything like a forum or tools to aid a module developer?
The C sources and SER developers guide describing the API.
http://iptel.org/ser/devel.html
6) OSS integration
- Is there any?
No.
Jan.
7235
days inactive
7235
days old
2 comments
3 participants
participants (3)
-
Dragos Vingarzan -
Jan Janak -
peter.3.edwards＠bt.com