Caller ID Configuration Task List
To configure the alerting method, use the following commands beginning in global configuration mode.
Configuration of the alerting method is required when the caller ID standard, specified by locale through
the cptone command, is other than Bellcore/Telcordia (if you do not configure the alerting method, the
default caller-id alerting ring 1 command is applied). The command that you enter is determined by the
Bellcore/Telcordia or ETSI standard that your service provider uses for caller ID. For more information
about standards, see the
Command
Step 1
Router(config)# voice-port slot/port
or
Router(config)# voice-port
slot-number/subunit-number/port
Step 2
Router(config-voiceport)# caller-id
alerting ring {1 | 2}
Step 3
Router(config-voiceport)# caller-id alerting
line-reversal
Cisco IOS Voice, Video, and Fax Configuration Guide
VC-820
Caller ID on Cisco 2600 and 3600 Series Routers and Cisco MC3810 Multiservice Concentrators
Caller ID Prerequisites Tasks, page 814
section.
Purpose
Enters voice-port configuration mode on a Cisco
MC3810 multiservice concentrator. The slot
number for analog voice ports on the Cisco
MC3810 multiservice concentrator is always 1.
There is no port 0 for voice ports.
Enters voice-port configuration mode on a Cisco
2600 or 3600 series router.
Configure this command on FXO ports where
caller ID information is received from a subscriber
telephone line. and on FXS voice ports from which
caller ID information is transmitted to an attached
telephone device.
Compatible settings are required on both ends of
the telephone line connection or caller ID
information may not be displayed.
Enter 1 if your telephone line service provider or
telephone device specifies it, to provide or expect
caller ID information following the first ring at the
receiving station. This is the default setting.
Enter 2 to provide or expect caller-ID information
during the long ring pause following two short
rings. This setting is used in Australia and the
United Kingdom.
(FXS ports only) Configure this setting only when
the attached telephone device requires line polarity
reversal to signal the start of caller-ID information
transmission.
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