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Showing articles from Call Completion Issues tag

Iowa, Minnesota and South Dakota Calling Restriction

# We would like to, first of all, thank you for using our services. With regards to call termination issues to Iowa and Minnesota as you have reported, we apologize for the inconvenience as this problem relates to call restrictions to these destinations. Unfortunately, the situation that led to the restrictions is bey…

SNOM phones cannot receive or make calls on a PPPOE internet connection

SNOM IP phones are known for sending very large packets (1500 bytes) that may be dropped by routers that are connected to PPPOE internet connections. PPPOE internet connections have a maximum packet payload of 1492 bytes, which may not be fragmented by the site router and simply dropped. A solution to this is to use …

Calls to Toll free numbers are not completing

When calling a Toll Free number from your VoIP line and it is not completing, but if you call the same Toll Free number from an off-net line it completes. The most likely issue is the caller ID you are sending in your invite. Most Toll-Free providers require that calls to them have a valid Caller ID, as they use that…

Cannot receive calls

# Problem: The customer is unable to receive inbound calls. * * * # Solution: This is related to the IP Handset (IP Centrex), or the Gateway Device (IBL, PRI) ability to register to Thinktels network. There are a few possibilities: 1. Power Outages 2. Loss of Internet Connectivity 3. Router / Firewall security …

No dial tone

# Problem: I do not hear any dial tone * * * # Solution: Follow steps: 1. Ensure power is up & network cables are correctly plugged in. 2. Verify internet connectivity. 3. Attempt a re-boot of your phone adapter (Polycoms unplug & plug back in).

A Toll-Free number is NIS from a Thinktel number.

This is most likely caused by the fact that when a Toll-Free number is ported away. The Toll-Free provider is not required to inform the losing carrier of the port away request. So what happens is that if you call the Toll-Free number from the PSTN, the off-net calls are routing properly via the Toll-Free provider. …

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