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?

Aaron Conaway

I shake my head around sometimes and see what falls out. That's what lands on these pages. If you have any questions, the best way to contact me is through Twitter at @aconaway.

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