Help, my SIP Trunk is blocked! Why and what now?

A blocked SIP Trunk, that is of course not something you want. There are a few possible reasons why your account has been blocked.

  1. Not enough prepaid balance: In order to send voice calls with a prepaid account, you need to have at least a balance of €5,- available. If your account drops below this threshold, the account and related SIP Trunks will be blocked. You can get your account unblocked, by topping up your account and contacting support@cm.nl to unblock your account.

  2. Fraudulous or spam traffic: Sometimes your SIP trunk is being used for fraudulous or spam traffic. If we suspect fraud traffic, we may block your account. Support will brief you via e-mail or phone if this is the case.

  3. Billing disputes: In the unlikely event of a billing dispute, your (voice) accounts and related services might be blocked until billing disputes have been settled.

Last modified on: 08/01/2020
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