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New Contributor

Call Block

Is there a way to block numbers in the Total Access 908?

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13 Replies
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Valued Contributor
Valued Contributor

Re: Call Block

Yes,

Here is an example:

voice grouped-trunk VOIP

trunk T01

accept $ cost 0

reject 12125551212

This trunk will accept all calls except 12125551212.

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New Contributor

Re: Call Block

Is that for blocking outgoing calls or for blocking incoming calls?

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Valued Contributor
Valued Contributor

Re: Call Block

That is to block calls going out that trunk.

If you want to block calls coming from this trunk you can block it on the destination trunk.

Here is an example of a system with a VoIP trunk and a PRI trunk:

voice grouped-trunk PRI

trunk T02

accept $ cost 0

reject 12125551212 <- Blocks calls from the VoIP to PRI

voice grouped-trunk VOIP

trunk T01

accept $ cost 0

reject 12125551212 <- Blocks calls from the PRI to VoIP

If you have more than two trunks you may want to use SABR https://supportforums.adtran.com/docs/DOC-1862

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New Contributor

Re: Call Block

How would we go about blocking Incoming calls?

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Valued Contributor
Valued Contributor

Re: Call Block

Please post your config.

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New Contributor

Re: Call Block

I have the config attached to this post.

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Valued Contributor
Valued Contributor

Re: Call Block

Kurttsc,

Thanks for posting!  The Total Access 900 series does not support blocking calls from a SIP trunk to an voice user (FXS port).  If the inbound call reaches the internal switchboard with destination that matches a voice user number, identity, or alias, the unit will ring the associated port.  However, you may be able to block this call in the network or on the customer PBX.

Thanks!

David

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Contributor III
Contributor III

Re: Call Block

David,

   Would it be possible to use an HMR Ruleset that matches on the from header and then rewrites to the to header to an invalid number and set up the policy to run the rule on calls coming in on the sip trunk?  Just a thought.

John Wable

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Valued Contributor
Valued Contributor

Re: Call Block

John,

Yes, that could work.  However, I would typically recommend that this type of feature be handled on the SIP server, SBC, or customer PBX.  If we use HMR to essentially "break" the valid call, it could have unexpected consequences on the network side.  I would be concerned about call loops or failover initiation on the network side if we were to respond with something like a 404 Not Found to a valid call. 

Thanks!

David