CCIE Voice Study

Configuring a new domain name on a CUCM server requires an immediate shutdown, since database replication has issues when the domain name is inconsistent, or has been recently configured. Take note: immediately after a domain is configured, the server will reset! You don't get asked again, so be prepared!!!

admin:set network domain ciscoccie.com
           *** W A R N I N G ***
Changing the networking domain name has no effect on the system
because DNS is disabled.


Continue (y/n)?y
           *** W A R N I N G ***
Adding/deleting or changing domain name on this server will break
database replication. Once you have completed domain modification
on ...

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The "first digit timer" controls the time between when a phone is taken off hook until the first digit is dialed. Increasing the timer gives users more time between going off-hook to enter digits to make a phone call. It is different to the T302 (inter-digit) timer. The "Off Hook to First Digit Timer" is configured under the SIP profile and applied to the physical IP handset. The default profile cannot be modified - the profile must be copied and then applied to specific phones.

The first digit timer comes into play whenever a new line is seized. For example:

• When the receiver is taken off-hook
• When the speaker button is pressed
• When "Transfer" is pressed and the party performing the transfer searches for the destination party (for example, ...

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The default auto registration protocol allows an administrator the ability to control whether auto registered phones use a SIP or SCCP phone load. In preparation for the lab, particularly since we're all space and resource limited, changing between SIP and SCCP relatively quickly is vital. I find changing the auto registration protocol and then deleting the phones gives me the ability to quickly test protocol-specific features, such as SIP dial-rule, and SCCP PLAR.

Cisco Unified Communications Manager 7.x provides both the SCCP and SIP phone loads for most phones. The determinant in whether a phone uses either phone load (and therefore protocol) depends on how the administrator has initially entered the phone into CUCM - either manually, or automatically (according to the auto ...

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Under System => Enterprise Parameters, change the service URL to use IP address (if not using DNS - which is unlikely in the lab, unless the router is providing DNS functions!). Otherwise the phone displays a Host Not Found error. Ensure that a phone is subscribed to at least one service, or pressing services returns a no services configured error.

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The CSS for auto registration is set under the Device Pool (System > Device Pool > Default). Note that this setting only affects the phone - the line CSS does not inherit the CSS; this must be set manually. The logical AND applied to the line and phone means that line doesn't necessarily need to be set.

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