Cisco Support Community

Caller ID does not display on second line of the IP phone

Core Issue

Cisco IP Phones 7940 and 7960 are configured with two lines. When the user is engaged on the first line and a call comes on the second line, the caller ID for the second call is not displayed. The second call is indicated by a single tone and a small indication on the line.

This issue is described in these Cisco bug IDs:

  • CSCdw86063: Caller ID in the second line is not displayed
  • CSCdw26479: Calling Line ID (CLID) is not showing up on 794x/6x when Call Forward Display (CFWD) to the same device
  • CSCdu37305: 7940/60 - No caller ID and notification in the second line


The resolution is available in these Cisco CallManager releases:

  • 3.1(4)
  • 3.2(3)
  • 3.3(1)

Problem Type

Call connection  (Connection quality: One-way audio, no busy tone, dropped calls, etc.)

Call control software  (CallManager, CallManager Express, ICS7750, SRST, SS7 call agents)

Call Control


Call Connection

Call presentation

CallManager Features

Call presentation

IP Phones and Clients

IP phone faulty operation

Failure Type

Missing information: feature, item, file, field, number, parameter, data, settings, configuration, option, etc.

Nothing displays: Not displayed, generated, created, etc.

When Problem Occurs

Part of call

End Where Problem is Heard or Device Type Involved

IP phone

Bug ID Number


Call Presentation

Calling line identification (CLID)

User Features

Second line

CallManager Versions

CallManager 3.3

CallManager 3.0

CallManager 3.1

CallManager 3.2

IP Phone Models


7960 series