[OpenSIPS-Users] Opensips and 100rel

[Jon Bonilla (Manwe)]

El Mon, 21 Jun 2010 19:16:05 -0400
Jeff Pyle <jpyle at fidelityvoice.com> escribió:

> Mehdi,
> 
> From a functioning Opensips 1.5 config file:
> 
> route[22] {     # Suppresses 100rel announcement
>         if (is_present_hf("Supported")) {
>                 if (subst('/^(Supported:.*)100rel\s*,(.*)$/\1\2/i')) {
>                         #xlog("L_INFO", "Removed 100rel support (1)\n");
>                 } else if (subst('/^(Supported:.*),\s*100rel(.*)$/\1\2/i')) {
>                         #xlog("L_INFO", "Removed 100rel support (2)\n");
>                 } else if (search('^Supported:.*100rel.*$')) {
>                         remove_hf("Supported");
>                         #xlog("L_INFO", "Removed 100rel support (3)\n");
>                 }       
>         }
> }              
> 
> I cannot take credit for this.  There is a link somewhere on the opensips
> website where someone had contributed this to it.  I also cannot find that
> link at the moment...
> 

Thanks for the code even if you don't take credit for it. It's better than
some code I made time ago :)

There is aditional code to add in my case. I've been using this kind of code to
disable 100rel negotiation between some Audiocodes and Nortel gw and a firmware
buggy Motorola mta model. I've realized that:

- Nortel uses "Allow" instead of "Supported", so the 100rel string must be
  erased in that header also.

- Audiocodes adds "Required" when you set the 100rel support as optional, so I
  have to remove that header too.

- Some vendors use "PRACK" instead of "100rel", so I had to find that string
  also to completely disable this beahaviour.