Interactive Hunt-Group Login in CME Fallback
on Mar 10, 2009CME gives users the ability, if they are members of a hunt-group, to interactively login and logout of hunt groups. This is achieved in normal operation through the HLog key, or using Feature Access Codes (FAC). When operating in CME fallback (/SRST)...

Power over Ethernet on Cisco IP Phones
on Mar 5, 2009Power over Ethernet, and utilization planning against switch capacity is an important consideration for any IT department. In addition to being a useful tool for IT managers, inline power commands can be used in such a way that we can force a phone t...

csim start: Using and Understanding
on Mar 4, 2009Call simulator (csim start) is an undocumented, extremely important tool and command in any Cisco voice engineer's arsenal. It allows debugging for call routing from voice gateways and CME devices. In this article, we examine some of the various resu...

Inter-Cluster Trunks and Overlapping Directory Number Ranges
on Mar 3, 2009An inter-cluster trunk is a H.323 connection between 2 x CallManager clusters. It is possible to configure the trunk under Gatekeeper control, or as a simple cluster-to-cluster connection. The obvious disadvantage of the latter being scalability, but...

Improving SRST Re-Convergence Time
on Mar 2, 2009When a phone re-registers in SRST to the local gateway, it can take more than 2 minutes by default when connectivity is restored to CallManager before the IP phone unregisters from SRST and reregisters to Cisco Unified Communications Manager. This i...

Static Locations and Call Admission Control in CUCM
on Feb 25, 2009Locations dictate the maximum amount of bandwidth available for simultaneous calls originating from or destinated from a site. Locations, along with Regions, are the building blocks of Call Admission Control in CallManager. Locations; i.e. maximum b...

On-Net Masking Using Ephone-DN Translation in CME
on Feb 24, 2009It may be desirable in certain circumstances to mask on-net callers with another number. In CUCM this is achieved using a combination of translation patterns and calling search spaces; in CME, the implementation of on-net masking is actually a little...

Connecting CME Systems Together via CallManager
on Feb 24, 2009Integrating CME systems with and via CallManager, without a Gatekeeper, is relatively simple, although perhaps not scalable with large implementations. Assuming a contiguous and closed dial plan (i.e. CME system 1 has DN range 4XXXX, CME system 2 has...

Integrating Cisco CallManager 7.0 and CME using H.323
on Feb 23, 2009Configuring a H.323 connection between CME and CallManager is just like configuring a H.323 connection between a Voice Gateway and CallManager. The fact that the Gateway is providing CME services is actually incidental - CallManager needs to know how...

General Delivery Mailboxes for Hunt-Groups in CUE
on Feb 22, 2009When the hunt options for a hunt-group are exhausted (i.e., no members answer), to ensure calls are not lost it is often desirable to send calls to voicemail. The question becomes, then, where are calls delivered? In Cisco Unity Connection and Cisco...