B-6
Cisco Unified Communications Manager Administration Guide
OL-18611-01
Appendix B Configuring Non-Cisco Phones That Are Running SIP
Where to Find More Information
For users that have third-party phones that are running SIP that are configured on any version of release
5.0 that are migrating/upgrading to release 6.0(1) o r above, b e aware t ha t, af ter the u pgr ad e, th ese
devices retain their release 5.0 configured values. However, if users need to make changes to DN
configuration values, users must change Maximum Number of Calls and Default Busy Trigger values on
each DN.
For basic third-party phones that are running SIP, only one line value needs to be modified. However,
for advanced third-party phones that are running SIP, users potentially must disassociate lines on the
device before they can make any DN-related configuration changes. This situation potentially can
happen if more than four lines are configured. An example sce nar io f ol lows:
• Advanced phone configured with 6 lines with Maximum number of calls = 4 and Busy Trigger = 2
for each line.
• After upgrade to release 6.1, ensure maximum number of calls on the device is reduced to 16 or
below before any DN changes. The current value on this phone equals 24 (6 lines * 4). The device
essentially exists in a negative zone (16-24).
• User would disassociate two lines from the device.
• After the user disassociates those lines from the device, you can modify the DN characteristics for
the remaining four lines by setting Maximum Number of Calls and Busy Trigger to an appr opr iate
value.
• User reassociates the disassociated lines.
Where to Find More Information
• Configuration Checklist for Third-Party Phones That Are Running SIP, page B-1
• Directory Number Configuration, page 64-1
• Cisco Unified IP Phone Configuration, page 91-1
• SIP Profile Configuration, page 101-1
• End User Configuration, page 114-1
• Cisco Unified IP Phones, Cisco Unified Communications Manager System Guide
Tab le B-4 Directory Number Migration Changes for Advanced Third-Party Phones
That Are Running SIP
Field Name Old Value New Value
Maximum Number of Calls Per
Device 64 16
Default Maximum Number of
Calls per DN 4 2
Default Busy Trigger per DN 2 2