Look at the diagram shown in Figure 8. Call legs 2 and 4 have been accounted for as outbound dial peers matched by using the dialed number DNIS information against the destination-pattern command under the dial peers.
Here's how the router uses the previous list of five rules to match the inbound dial peers:. That is, the phone itself does not provide caller ID information to the router, because an analog phone does not know its own phone number. Here's how the decision process would flow:. So this now begs the question, "What is dial peer 0? The default codec value for VoIP dial peers is G.
This combination will work just fine. The only restriction to keep in mind is that you cannot use the same dial-peer tag value for different functions on the same router. Continue reading here: Using Dial Peer Wildcards. You are commenting using your Facebook account. Notify me of new comments via email.
Notify me of new posts via email. Blog at WordPress. Its, Me. Dial Peers By rsccievoice on July 30, VoIP dial peers do not automatically strip digits. This type of dial peer is used for store-and-forward fax on-ramp and off-ramp faxing.
Default Dial peer All inbound call legs must have an inbound dial-peer, therefore a system default dial-peer exists which is the last resort match. The protocol can be changed to SIPv2. The DNIS is mapped to the outbound dial peer. The gateway forwards the call directly to the configured destination.
Inbound Dial-peer matching Precedence of matching criteria for inbound dial peers: incoming called-number-Matches called number — Most explicit match answer-address- Matches calling number-Most explicit match Destination-pattern- Matches calling number — Most explicit match port. If multiple dial peers have the same port, selects the dial peer added to the configuration earlier default dial peer-Predefined parameters Only one condition must be met.
Pots dial peers are used when connecting to any analog interface. T1 might be digital, but for the VoIP phone system, it represent a traditional telephony system and hence is designated as a Pots connection.
This uses wildcards as well, although some of the wildcards are different from the ones used in translation rules. In the example above, [] means any digit between 2 and 9.
Hence, the string 91[].. The number 9 is used for an outside dial tone, 1 representing a Long Distance number and the remaining 10 digits. The pots dial peers strip off any explicitly matched digits. Hence, in this example, 9 and 1 are digits which have been matched explicitly but the remaining are wildcards. The phone system will strip off 9 and 1 from the number by default and send the remaining numbers out. This means that it will send out everything except the 9 since it is forwarding the LAST 11 digits.
This is essential to tell the phone system which port to send the call out through. There are a number of options under the dial peer configuration, but this is what is used most of the time.
A simple rule of thumb — anything that is not POTS will generally be voip. A voip dial peer does not have a port command associated with it since it does not relate to a port in any way. Voip dial peers have an option of hard-coding the codec in use. By default, the CME system will use G as the codec, but circumstances might require you to manipulate the codec under the dial peers.
A classic case of changing the codec under the dial peers is when sending calls to Unity Express. Unity understands the following parameters:. A codec of gulaw. We assume that the Provider has given us 3 DIDs — the numbers are , and Here is the way a phone should ring when a call comes in:.
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