[Serusers] Serweb Error : 500 fifo_uac: no mem for hf block

[Jim Burwell]

When you click on a contact in SERweb, it invokes a "click to dial" 
script which uses t_uac_dlg FIFO command.

The error you are getting is the one SER returns for this FIFO call when 
it can't resolve the SIP domain of the user you are calling.  SER 
requires that the SIP domain is either resolvable in DNS, the /etc/hosts 
file, or a DNS SRV entry to know how to route these calls, EVEN if the 
SIP domain is ITSELF.

In this case you're not calling SER and walking through the .cfg file, 
etc.  SER is simply acting as a UA and trying to call the user at sipdomain 
without looking in locations, checking any uri=myself type rules, etc 
(the config script isn't run at all until SER calls itself by sending 
the packet to itself, which require then name resolution).  You can 
probably think of it as simply calling t_relay() directly.  If you use 
an IP address, it works fine, but of course SERweb stuff you click on 
for CTD usually arn't IP addresses.  Define the SIP domain you are 
calling in /etc/hosts, DNS, or define a DNS SRV message for the SIP 
domain, it will work with a textual SIP address.  I suggest using the 
DNS SRV entry, since defining your domain in hosts or DNS can cause BAD 
problems with other functions in your domain, such as mail delivery, or 
if you have your domain pointed to your WWW server so that users can 
type just the domain name w/o "www" and get to your web site (common 
practice).

There may be other solutions too, such as including Route headers in the 
INVITE message, but I don't know if t_uac_dlg pays attention to these, 
or how these are properly formed, etc.  iptel guys ?

- Jim


CURRO_DOMINGUEZ wrote:

>Hello
> 
> I continue with my tests on SER. Things are going OK, so really 
> thanks. 
> 
> I have this error in serweb. I connect as an user and go to phonebook.
> When I click on sip address of my contacts, I get this message on a 
> newwindow:
> 
> 500 fifo_uac: no mem for hf block.
> 
> ¿Is this normal?
> 
> And I have this problem too: I can't send IM from serweb. When I click
> on send, I get
> 
> 478 fifo_uac: Unresolveable destination (478/FIFO/UAC)
> 
> However, the SIP clients are running OK.
> 
> Again, thank you very much
> 
> Curro
>
>
>
>_______________________________________________
>Serusers mailing list
>serusers at lists.iptel.org
>http://lists.iptel.org/mailman/listinfo/serusers
>  
>

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|         Jim Burwell - Sr. Systems/Network/Security Engineer, JSBC         |
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