Monitor mode for shared lines provides a visible line status indicating whether the line is in-use or not. A monitor-line lamp is off or unlit only when its line is in the idle call state. The idle state occurs before a call is made and after a call is completed. For all other call states, the monitor line lamp is lit.

A line button that is configured for watch mode on one phone provides Busy Lamp Field (BLF) notification for all lines on another phone (watched phone) for which watched directory number is the primary line. Watch mode allows a phone user, such as a receptionist, to visually monitor the in-use status of an individual phone.

Enabling Presence for Internal Lines.

• Allows the router to accept incoming presence requests.

sip-ua
  presence enable

• presence call-list
  • Globally enables BLF monitoring for directory numbers in call lists and directories on all locally registered phones.
  • Enable BLF monitoring globally on all registered ephones
  • This allow us to monitor the presence status on the directories, missed/dialed call
  • This can also be enabled on the phone level if not enabled here.
• max-subscription
  • max number of concurrent watch sessions allowed
  • Default is 100

presence
  presence call-list
  max-subscription 128

SCCP

• Setup ephone DN to be watched as presentity
• Allows the phone line associated with this directory number to be monitored by a watcher in a presence service.

ephone-dn 2
  allow watch

SIP

• Setup voice register DN to be watched as presentity
• Allows the phone line associated with this directory number to be monitored by a watcher in a presence service.

voice register dn 2
  allow watch

For SCCP

• Assign BLF speed dial to watch the presentity
• Enables BLF monitoring of directory numbers that appear in call lists and directories on this phone?

ephone 1
  blf-speed-dial 1 <dn-number> label <label> [device]
  presence call-list

For SIP

• Assign BLF speed dial to watch the presentity
• Enables BLF monitoring of directory numbers that appear in call lists and directories on this phone?

voice register pool 1
  blf-speed-dial 1 <dn-number> label <label> [device]
  presence call-list

<note>May need to reboot the router if there is problem with displaying presence in call list</note>

To enable internal watchers to monitor external directory numbers on a remote Cisco Unified CME router, perform the following steps

• Specifies the IP address of a presence server for sending presence requests from internal watchers to external presentities.
• Allows internal watchers to monitor external directory numbers.
• Allows external watchers to monitor internal directory numbers.

presence
  server <remote-ccme-ip>
  allow subscribe
  watcher all

• (Optional) Enables authentication of incoming presence requests from a remote presence server.
• (Optional) Specifies the credential file to use for authenticating presence subscription requests.

voice register global
  authenticate presence 
  authenticate credential 1 flash:cred1.csv 

• Display presence configuration settings

Router# show presence global 

Presence Global Configuration Information: 
============================================= 
Presence feature enable : TRUE 
Presence allow external watchers : FALSE 
Presence max subscription allowed : 100 
Presence number of subscriptions : 0 
Presence allow external subscribe : FALSE 
Presence call list enable : TRUE 
Presence server IP address : 0.0.0.0 
Presence sccp blfsd retry interval : 60 
Presence sccp blfsd retry limit : 10 
Presence router mode : CME mode 

• Use this command to display information about active presence subscriptions

Router# show presence subscription summary 

Presence Active Subscription Records Summary: 15 subscription 
Watcher Presentity SubID Expires SibID Status 
======================== ======================== ====== ======= ====== ====== 
6002@10.4.171.60 6005@10.4.171.34 1 3600 0 idle 
6005@10.4.171.81 6002@10.4.171.34 6 3600 0 idle 
6005@10.4.171.81 6003@10.4.171.34 8 3600 0 idle 
6005@10.4.171.81 6002@10.4.171.34 9 3600 0 idle 
6005@10.4.171.81 6003@10.4.171.34 10 3600 0 idle 
6005@10.4.171.81 6001@10.4.171.34 12 3600 0 idle 
6001@10.4.171.61 6003@10.4.171.34 15 3600 0 idle 
6001@10.4.171.61 6002@10.4.171.34 17 3600 0 idle 
6003@10.4.171.59 6003@10.4.171.34 19 3600 0 idle 
6003@10.4.171.59 6002@10.4.171.34 21 3600 0 idle 
6003@10.4.171.59 5001@10.4.171.34 23 3600 24 idle 
6002@10.4.171.60 6003@10.4.171.34 121 3600 0 idle 
6002@10.4.171.60 5002@10.4.171.34 128 3600 129 idle 
6005@10.4.171.81 1001@10.4.171.34 130 3600 131 busy 
6005@10.4.171.81 7005@10.4.171.34 132 3600 133 idle 

• This command displays debugging information about the presence service.

Router# debug presence errors 

*Sep 4 07:16:02.715: //PRESENCE:[0]:/presence_sip_line_update: SIP nothing to update 
*Sep 4 07:16:02.723: //PRESENCE:[17]:/presence_handle_notify_done: sip stack response code [29] 
*Sep 4 07:16:02.723: //PRESENCE:[24]:/presence_handle_notify_done: sip stack response code [29] 
*Sep 4 07:16:02.791: //PRESENCE:[240]:/presence_handle_notify_done: sip stack response code [17] 
*Sep 4 07:16:02.791: //PRESENCE:[766]:/presence_handle_notify_done: sip stack response code [17] 
*Sep 4 07:16:04.935: //PRESENCE:[0]:/presence_sip_line_update: SIP nothing to update 
*Sep 4 07:16:04.943: //PRESENCE:[17]:/presence_handle_notify_done: sip stack response code [29] 
*Sep 4 07:16:04.943: //PRESENCE:[24]:/presence_handle_notify_done: sip stack response code [29] 
*Sep 4 07:16:04.995: //PRESENCE:[240]:/presence_handle_notify_done: sip stack response code [17] 
*Sep 4 07:16:04.999: //PRESENCE:[766]:/presence_handle_notify_done: sip stack response code [17] 

• This command displays debugging information for BLF presence features.

Router# debug ephone blf 

*Sep 4 07:18:26.307: skinny_asnl_callback: subID 16 type 4 
*Sep 4 07:18:26.307: ASNL_RESP_NOTIFY_INDICATION 
*Sep 4 07:18:26.307: ephone-1[1]:ASNL notify indication message, feature index 4, subID [16] 
*Sep 4 07:18:26.307: ephone-1[1]:line status 6, subID [16] 
*Sep 4 07:18:26.307: ephone-1[1]:StationFeatureStatV2Message sent, status 2 
*Sep 4 07:18:26.307: skinny_asnl_callback: subID 23 type 4 
*Sep 4 07:18:26.307: ASNL_RESP_NOTIFY_INDICATION 
*Sep 4 07:18:26.307: ephone-2[2]:ASNL notify indication message, feature index 2, subID [23] 
*Sep 4 07:18:26.311: ephone-2[2]:line status 6, subID [23] 
*Sep 4 07:18:26.311: ephone-2[2]:StationFeatureStatV2Message sent, status 2 
*Sep 4 07:18:28.951: skinny_asnl_callback: subID 16 type 4 
*Sep 4 07:18:28.951: ASNL_RESP_NOTIFY_INDICATION 
*Sep 4 07:18:28.951: ephone-1[1]:ASNL notify indication message, feature index 4, subID [16] 
*Sep 4 07:18:28.951: ephone-1[1]:line status 1, subID [16] 
*Sep 4 07:18:28.951: ephone-1[1]:StationFeatureStatV2Message sent, status 1 
*Sep 4 07:18:28.951: skinny_asnl_callback: subID 23 type 4 
*Sep 4 07:18:28.951: ASNL_RESP_NOTIFY_INDICATION 
*Sep 4 07:18:28.951: ephone-2[2]:ASNL notify indication message, feature index 2, subID [23] 
*Sep 4 07:18:28.951: ephone-2[2]:line status 1, subID [23] 
*Sep 4 07:18:28.951: ephone-2[2]:StationFeatureStatV2Message sent, status 1