How do I change the SIP refistration refresh?

[GoogleCodeExporter]

Hi,

I am having a problem where the SipDroid seems registered, the SIP provider 
sees it as registered and therefore thinks it's ringing, but... it's not and 
incoming calls ring out.

I called up Maxotel, and they told me that my SIP client (Sipdroid) is 
refreshing its SIP registration every hour, whereas it should be every 120 
seconds.

I looked and looked for that setting, and never found it.

Am I missing it blatantly? Or is it actually there?

Thank you!

Merc.

Original issue reported on code.google.com by [email protected] on 1 Jul 2015 at 5:29