IIUC Notes – Phone Features

Here are some more notes from my IIUC studies.  As always, corrections requested.

Local Directory

  • Allows users to look up names
  • Allows names to show up when dialing or receiving a call
  • Most phones have a directory button; some have a menu options for the directory

R1(config)#ephone-dn 1
R1(config-ephone-dn)#name Roger Smith

  • Directory entries can be added manually

R1(config-telephony)#directory entry 1 1700 Corporate Fax
R1(config-telephony)#directory entry 2 1701 HR Fax

  • By default, sorting is done alphabetically by first name.
  • Sorting can be changed

R1(config-telephony)#directory last-name-first

Call Forwarding

  • Can be done by the user or through CLI
  • User presses CFwdAll button, enters a number, and #; pressing CFwdAll again cancels forwarding.
  • CLI forwarding is more flexible

R1(config-ephone-dn)#call-forward busy 1800
R1(config-ephone-dn)#call-forward noan 1800 timeout 25 <- if no answer after 25 seconds
R1(config-ephone-dn)#call-forward max-length 0 <- disabled forwarding
R1(config-ephone-dn)#call-forward max-length 4 <- restricts forwarded number to a length of 4 digits

  • H.450.3: A voice gateway redirects the forward to another gateway instead of using the phone as a proxy
    • Direct path from originator to destination
    • Frees up network resources by keeping path direct
    • Keeps latency and jitter down by avoiding long looping paths and a hairpin turn at the phone
  • Forwarding patterns can help restrict where calls can be forwarded

R1(config-telephony)#call-forward pattern 1… <- allows forwarding to a 4-digit number starting with 1

Call Transfer

  • H.450.2: A voice gateway redirects transfers to another gateway instead of using the phone as a proxy.
    • The user doing the transfer is dropped from the conversation after transfer is complete.
  • Generically, there are two types of forwarding.
    • Blind: sends the caller to the number blindly
    • Consult:  allows you to talk to the endpoint before transferring the call
  • CME has three types of forwarding.
    • full-blind:  blind transfers using H.450.2 or SIP REFER
    • full-consult:  consult transfers using H.450.2 or SIP REFER if second line is available; if not, fall back to full-blind
    • local-consult:  Cisco-proprietary method for full-consult

R1(config-telephony)#transfer-system full-consult
– or –
R1(config-ephone-dn)#transfer-mode consult

  • Transfer patterns work similarly to forwarding patterns

R1(config-telephony)#transfer-patter 1…

Call Park

  • Call parking allows a user to retrieve a call from any phone by "parking" the call to an extension.
  • The call can be picked up from any phone able to dial that extension.
  • Park numbers can be assigned randomly or manually.

R1(config-ephone-dn)#park-slot <- makes this DN a park slot

  • Call parking has several options.
    • reserved-for dn:  Only that DN can use this park-slot
    • timeout seconds:  Ring the phone phone that parked the call after that many seconds to remind them of the park
    • limit count:  After that many timeout intervals, drop the call.  Not good for customers.
    • notify dn [ only ]:  Notify that DN when a timeout is reached
    • recall:  Sends the call back to the original phone when the timeout is reached
    • transfer dn:  Sends the call to this DN when the timeout is reached
    • alternate dn:  If the DN in the transfer command is not available, go here
    • retry seconds:  Try to transfer again after this many seconds
  • The phone must be reset for call parking to take effect.

Call Pickup

  • Allows users to pick up other ringing phones
  • Best to use pickup groups so the sales guys don't pick up support calls by accident

R1(config-ephone-dn)#pickup-group 5000

  • There are three methods to pickup a call.
    • Directed pickup:  A user picks up a ringing phone by pressing PickUp followed by the target DN.
    • Local group pickup:  A user picks up a ringing phone in his pickup group by pressing GPickUp then *.
    • Other group pickup:  A user picks up a ringing phone in another pickup group by pressing GPickUp then the other group number.



  • Technically is a speed dial and auto-answer combination
  • Intercom button is pressed, which dials a DN bound to another phone; that phone automatically answers on mute.
  • The DNs involved usually (?) can't be dialed.
    • e.g., A101

R1(config)#ephone-dn 99
R1(config-ephone-dn)#number A99
R1(config-ephone-dn)#intercom A98 label "Boss"
R1(config)#ephone-dn 98
R1(config-ephone-dn)#number A98
R1(config-ephone-dn)#intercom A99 label "Lackey"
R1(config)#ephone 54
R1(config-ephone)#button 5:99
R1(config)#ephone 73
R1(config-ephone)#button 5:98

  • Other options
    • barge-in:  Places existing calls on hold on the other end and barges n
    • no-auto-answer:  Rings instead of auto answers
    • no-mute:  Doesn't mute when auto answering.  Can you say spying?