Restricting Inbound Calls
Restricting inbound calls adds a little complexity to your COR configuration. Reusing existing COR lists that are built to restrict outbound calls is usually possible, but your list names are not likely to be meaningful, and the logic might be difficult to follow.
In Example 12-4, calls from the PSTN to the lobby phone that is connected to port 2/0/0 are restricted. (Recall from Step 4 of the "Implementing COR" section that the lobby phone is an analog telephone.) Calls from the PSTN to IP phones are not restricted, as illustrated in Figure 12-2. To accomplish this, two new labels are added and assigned to a COR list with the same name:
- InToLobby Assigned as an incoming COR list on the inbound dial peer from the PSTN
- OutToLobby Assigned as an outgoing COR list on the dial peer that is associated with the lobby phone
Figure 12-2. Restricting Inbound Calls
|
Leeds(config)#dial-peer cor custom Leeds(config-dp-cor)#name Local Leeds(config-dp-cor)#name LongDistance Leeds(config-dp-cor)#name Mobile Leeds(config-dp-cor)#name International ! additional label for inbound COR list Leeds(config-dp-cor)#name InToLobby ! additional label for outbound COR list Leeds(config-dp-cor)#name OutToLobby ! ! INCOMING COR LISTS Leeds(config)#dial-peer cor list LocalCalls Leeds(config-dp-corlist)#member Local ! Leeds(config)#dial-peer cor list LDCalls Leeds(config-dp-corlist)#member LongDistance ! Leeds(config)#dial-peer cor list MobileCalls Leeds(config-dp-corlist)#member Mobile ! Leeds(config)#dial-peer cor list InternationalCalls Leeds(config-dp-corlist)#member International ! Leeds(config)#dial-peer cor list LobbyPhones Leeds(config-dp-corlist)#member Local ! Leeds(config)#dial-peer cor list InToLobby Leeds(config-dp-corlist)#member InToLobby ! Leeds(config)#dial-peer cor list OutToLobby Leeds(config-dp-corlist)#member OutToLobby ! ! OUTGOING COR LISTS ! Leeds(config)#dial-peer cor list Employees Leeds(config-dp-corlist)#member Local Leeds(config-dp-corlist)#member Mobile Leeds(config-dp-corlist)#member OutToLobby ! Leeds(config)#dial-peer cor list Managers Leeds(config-dp-corlist)#member Local Leeds(config-dp-corlist)#member Mobile Leeds(config-dp-corlist)#member LongDistance Leeds(config-dp-corlist)#member OutToLobby ! Leeds(config)#dial-peer cor list Executives Leeds(config-dp-corlist)#member Local Leeds(config-dp-corlist)#member Mobile Leeds(config-dp-corlist)#member International Leeds(config-dp-corlist)#member OutToLobby ! ! ASSIGNING COR LISTS TO DIAL PEERS ! Leeds(config)#dial-peer voice 1 pots Leeds(config-dp-corlist)#description Inbound From PSTN Leeds(config-dp-corlist)#incoming called-number . Leeds(config-dp-corlist)#corlist incoming InToLobby Leeds(config-dp-corlist)#port 1/0/0:15 ! Leeds(config)#dial-peer voice 4001 pots Leeds(config-dp-corlist)#description Main Lobby Phone Leeds(config-dp-corlist)#destination-pattern 4001 Leeds(config-dp-corlist)#corlist incoming LobbyPhone Leeds(config-dp-corlist)#corlist outgoing OutToLobby Leeds(config-dp-corlist)#port 2/0/0 |
Because the inbound COR list is not a subset of the outbound COR list, the goal of restricting PSTN calls to the lobby phone has been met. For the IP phones to call the lobby phone, you must add the OutToLobby label to the Employees, Managers, and Executives incoming COR lists. Because no outgoing COR lists are assigned to the IP phones, calls from the PSTN to IP phones will still be completed.