10 May
2005
10 May
'05
11:55 p.m.
hello Karun,
This sounds like a great idea. We also don't need to
depend on DNS servers. Seems like lot of people are
having similar issues. It would also be nice if the
DID field could also take regular expressions {i.e.
800.*/etc}.How hard is this to implement?
ac
--- Karunakar Chemudugunta <voicexml(a)gmail.com> wrote:
I have a same problem as explained below.
PSTN ---> VOIP GATEWAY(Cisco AS5400) --> SER------->
Multiple media gateways.
Planning to depoy media servers which can able to
running IVR
fuctionality and would like to use SER in front of
lot of media
gateways.
Each media gateway, might be running lot of user
agents which are able
to serve IVR fuctionality. all these user agents are
going to register
with SER with <media server hostname_channel number>
format as user
name. Eg. mediaserver1_ch1(a)mydomain.com
Otherside, SER will receive call from PSTN through
VOIP Gateway with
multiple DIDs and these calls need to route calls to
media gateways (
typical hosted call center environment )
I have tried with lot of possibities using ser.cfg
file and did n't
find way to route calls to media gateways.
Just I am thinking, it would be possible to write
another module or
part of userloc module, which gives a routing
fuctionality like cyclic
or rotary senarios which helps load balancing and
easy maintenance of
media servers.
Possible solution
------------------------------
Lets assume, if we have resource file called
resource.cfg which has
all did and resource mapping. All resource names are
substring of
usernames of useragents in media servers.
resource.cfg
##########################################
resource:resource1 =
mediaserver1,mediaserver2,mediaserver3,mediaserver4,mediaserver5
did:8005551212 = cyclic:resource1
did:8005551213 = rotary:resource1
##########################################
every invite message need to call fuction like
lookup_route() instead
of lookup() in ser.cfg
this fuction instenally calls routing module,
searches for did in
resource file and get corresponding resource type(
rotary or cylic),
resource name.
search each resource member in useloc using function
get_urecord and
it if avaialbe and route calls to that particar
user.
Summary:
1. ser receives call from PSTN
2. Finds resource name for DID
3. Find resource string depend of type of routing
from resorce list.
4. Serach usrloc database with resource string as
sub string of
usernames in userloc database.
5. Forward call to that particular media gateway.
Welcome for any comments and thoughts ?
Thanks,
Karun Chemudugunta
On 5/10/05, a c <lra101(a)yahoo.com> wrote:
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hello Iqbal,
just need the SIP messages load balance across
servers. No RTP.
thank you
ac
--- Iqbal <iqbal(a)gigo.co.uk> wrote:
> mediaproxy can do it using dns. Am assuming you
want
> the rtp stream load
> balanced, if its the sip messages, search
throuygh
> the archives there is
> along discussion bout howto use LVS and load
> balancing....in short
> doesnt seem to work, cause SIP uses udp
>
> Iqbal
>
> a c wrote:
>
> >hello,
> >
> > got a question on SER. Could SER do load
balance
> >across SIP servers?
> >
> >for example:
> >
> >SIP carrier --> SER --> Media/App Servers
> {multiple}
> >
> >Are there any Configuration examples I can look
at?
thank you
ac
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