Cisco 2600 Series Appendix page 2

Caller ID Overview
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Calling Name and Number
Figure 130
types of caller-ID support depending upon whether the caller-ID information from the caller passes
through an FXO or FXS port before reaching the party who receives the call.
Figure 130
User A
User B
User G
User C
User F
Table 56
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•
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Cisco IOS Voice, Video, and Fax Configuration Guide
VC-812
Caller ID on Cisco 2600 and 3600 Series Routers and Cisco MC3810 Multiservice Concentrators
Service Provider—In traditional telephony, caller ID is a standard service that service provider
customers expect. With the Cisco support for caller ID, service providers can offer the feature for
packet-switched Voice over IP (VoIP), Voice over Frame Relay (VoFR), and Voice over ATM
(VoATM) services.
shows a hypothetical topology where users, indicated by telephone icons, receive different
Caller ID and ANI Support
FXS
FXS
FXS
FXS
shows how caller-ID information is received by the users in
When an outbound caller-ID call is carried by a trunk with E&M or R2 signaling, the recipient sees
only the ANI calling number of the caller.
When caller-ID information is sent from an originating FXS station by way of the PSTN, the
recipient sees only the identification of the FXO port through which the call is routed.
When caller-ID information is sent from an originating station over a trunk with E&M or R2
signaling and through the PSTN, the recipient sees only the trunk identification because the ANI
information is not preserved by the PSTN.
FXO 408 555-1111
VoIP, VoFR,
or VoATM
VoIP, VoFR,
or VoATM
FXO 408 555-2222
FXS
User E
Trunk
(E&M/R2)
Trunk
Trunk (with ANI support) PBX
Figure 130 as follows:
User D
PSTN