CME Problem with SIP-UA Credentials

[born.jason]

Hi,

i have a little Problem with my Credentials in the sip-ua configuration. If i configure a username incoming calls working fine. But after some time (some minutes i think?) no incoming calls working. If i than delete the credentials and configure it new it works again for some time?

Is there a timeout issue? What do i have to configure?

Second question is -> How could i force a new registration to the SIP Provider? For the moment i look at "show sip-ua register status" the timer before i can debug the registration process.

Thanks and regards

Woisch

[ADAM CRISP · Accepted solution]

Hello.

It's likely that your Cisco is behind a NAT device, and that after a while the NAT bindings are timing out on the NAT'ing router, so a period of SIP signaling inactivity inbound messages from the Service provider are not getting through.

You're right, getting the Cisco ro register more frequently will sort this out.

The Sip registration interval is configured under sip-ua - where you set the SIP registrar:

sip-ua

UC_540(config-sip-ua)#registrar dns:my.sp's.sip_registrar expires ?

<60-65535>  SIP Registration Expire Value in Seconds

eg

registrar dns:proxy.voip.co.uk expires 120

120 seconds is probably OK, most router's give up at 600 seconds, although I have seen NAT routers give up UDP bindings after 90, so lower if you still have problems.

To force a registration - remove and add the registrar.

(When you remove the registrar the device will send register messages with an expiry time of zero, which unregisters the contact)

and add back in

eg

conf t

sip-ua

no registrar

registrar dns:proxy.voip.co.uk expires 120

Adam

[born.jason]

Thanks Adam. Looks good now.

Now i need only a solution for my dial peer problem. I don`t want to wait the interdigit timeout or press # after every number. But i don`t know how to design my dial peers for 4 - 13 digits numbers.

Do you have a suggestion?

[ADAM CRISP]

Actually, There's an application called CCA which is used with the small business UC500. which runs call manager express.

The CCA tool has "locale" packs which provides the supporting files for local customisation - like dial plans. You could try digging in to that application, and see whether you can work our the dial plan from the templates.

It could be worth posting on the UC500 forum and reach our to a user in your region and ask them to post their voip dial-peers.

I'm glad you're sorted.

Adam