Practice Lab Reflections #8

CUCME

• When changing MAC addresses on SIP phones in CUCME, make sure that you copy the entire output of the SIP phone.  Otherwise the “no id mac” command will erase the entire configuration under “voice register pool”.
• SIP CUCME phones cannot use “voice class code” to step down codecs to a lower type.
• “num-exp” commands do not reorder themselves.  You will need to reorder them frm most specific to least specific.

Useful Debugs

debug voip dialpeer
show voice register dial-peer
show sccp connections summary
show sccp connections
show dspfarm dsp active
show call active voice brief
show gatekeeper gw-type prefix
show gatekeeper zone prefix
show gatekeeper endpoint
show gatekeeper call
debug isdn q931

Mobility

Physical Location

• Is mobility enabled on the device?
• Check the phone’s subnet.  Is it connected by Device Mobility Information to a Device Pool?
• Compare the Physical Location of the home Device Pool to the roaming Device Pool.
• If the same, use the home Device Pool.
• If different, use the roaming Device Pool paying additional attentions to the “Roaming Sensitive Settings.”

Device Mobility Group

• Check the Device Mobility Group on the Device Pool
• If the same, the ROAMING device pool CSS overrides the device CSS.  This is the one case where Device Pool overrides device CSS.
• If different, the device CSS takes precendence.
• Note: Think of DMGs are dialing vernacular for a region.  This would allow a caller in France to roam to the US and dial a local Minnesota number as he is familiar with, as an international number.
• CIPC is not a supported UM client.
• The “Mobile Phone” checkbox allows use of the “Transfer to my mobile” service.