Harold Bhatkoti's blog………..

1994: Multimedia Manager

1997 –  Selsius-CallManager (SCM) 1.0

1998  SCM 2.0

A few features were added on top of call manager v1. Cisco Acquired Selsius.

2000: Cisco CallManager (CCM) 3.0

This is when SCM became famous CCM. MGCP and multiple node clustering was added. SQL clustering (YES).

2001: CCM 3.1

More device support, MOH added for the first time, XML and HTML support in the phones. This was also the first time when TAPI and Extension Mobility (EM) feature was added.

2001: CCM 3.2

CCM v3.2 was the first enterprise level IPT solution. Clustering feature was enriched. Some of the features below were added:

• GUI localization
• Added handfree, auto-answer and intercom
• ATA support
• PRI MGCP  protocol support
• Drop last conference party
• WebAttendant consult transfer
• MWI
• MCS and ICS server support for CCM

2002: CCM 3.3

More features were added like:

• IPMA
• CCM cluster can support up to 30K phones (WOW)
• H323 support for the first time
• Configurable call waiting tone

2004: CCM v4.0

Success of previous CCM, this version had been just add-on on top of the previous version with the following improvements:

Some new features and enhancements added during this release were:

• 2 calls per line to 150 calls per line (configurable)
• Hunt group
• Call barge
• RTP encryption
• Call transfer and join (conferencing)
• Windows 2000 based version CCM

This version was made EOL in 2008.

2004: CCM 4.1

More features were added, like:

• MLPP, MCID, CMC, FAC
• RTP and Signaling encryption support
• DNA tool
• Time of day routing (TOD routing)

2006: Cisco Unified CallManager (CUCM) 4.2

CUCM 4.2 was released with CUCM 5. In March 2006. At the same time Cisco also launched some new products – IPCC and Meeting Place for voice and video offering.

Hunt group login and call forward no coverage, call forward on unavailable or busy was introduced. No SIP endpoint support though.

2007: CUCM 4.3

Well, this release was the first version to support Windows 2003.

2006: CUCM 5.0

CUCM 5.0 (well first Linux based) and CUCM 4.2  were released in March 2006. Introduces SIP end point support for the first time.

2007: CUCM 5.1

No major features were released, but fixed many of those annoying bugs in v5. 0

2007: CUCM 6.0

Cisco further renamed Cisco Unified Call manager (CUCM) to Cisco Unified Communication Manager (CUCM). So abbrviation still the same. This version was way too much advanced in terms of installation, configuration and licensing. Cisco dropped supporting Windows based version and commit to focus on Linux based (may be windows is not secure and stable enough?)
– Added intercom between endpoints
– SNR
– Licensing improvement – feature and DLU based licensing
– Support to be installed in VMware for lab purpose only.

Cisco also launched new products, CUCMBE (aka cucumber) for small business. Cisco Unity connection v2 was born.

2008: CUCM 7.0

There was a talk about Cisco releasing both windows and Linux based CUCM 7.0 but the reality was the only Linux based came out of the hat :). Informix database for everything from now on and Presence was born.
Cisco released 7.1 mega cluster support and it was the stable version of all.