Internetwork Performance Monitor Vulnerability
Submitted by Dennis Hartmann on Wed, 01/20/10 - 1:03pm.Cisco announced a vulnerability on Internetwork Performance Monitor (IPM) today at the following URL:
http://www.cisco.com/warp/public/707/cisco-sa-20100120-ipm.shtml
Internetwork Performance Monitor (IPM) is an add-on for the Cisco Works network management platform. IPM is a graphical utility that works very closely with service assurance agent (SAA) probes in a technology suite that Cisco now refers to as the IP SLA Measurement Toolkit. Read more
Congratulations Alex Hannah: CCIE (voice) # 25853
I have had the good fortune of working very closely with Alex Hannah while Alex was a voice instructor at Global Knowledge. Alex is a hard worker and great person. Congratulations on your VOICE CCIE Alex! Alex Hannah - CCIE# 25853
E.164 and International Call Routing
This blog will discuss some uses of the E.164 plus (+) character that Cisco began to fully support in Cisco Unified Communications Manager (CUCM) 7.0. Read more
Audio Codec Negotiation
Cisco routers acting as voice gateways perform an important job in Unified Communications (UC) deployments. Digital signal processors (DSP) in voice gateways translate voice over IP real-time protocol (RTP) media to time division multiplexing (TDM) required for traditional telephony interoperability. A variety of audio codecs that have different audio quality and bandwidth requirements are used on the voice over IP (VoIP) call leg that determine call quality. Read more
Common Device Configuration
Cisco Unified Communications Manager (CUCM) 5.0 introduced the common device configuration elements which provide a pool of configuration elements that can be assigned to multiple devices. The functionality of the configurations is similar to the operation of a device pool in CUCM. To change a configuration element among a pool of 500 devices, only the common device configuration needs to be changed.
The Common Device Configuration includes the following configuration parameters:
•Softkey Template Read more
•User Hold MOH Audio Source
•Network Hold MOH Audio Source
•User Locale
Message Monitor
Cisco Unity 5.0 introduced a live call screening feature called message monitor. The message monitor feature is not supported on Cisco Unity Connection (CUC) or Cisco Unity Express (CUE) at the time of this writing.
The message monitor feature displays a screen on the Cisco IP Phone every time a call is routed to the phone’s associated primary line voicemail inbox. When the message monitor feature is displayed on the Cisco IP phone, the following four softkeys are available:
• Monitor Read more
• Stop
• Ask
• Take
Visual Voicemail
Visual Voicemail is a feature of Cisco Unity that allows voicemail users to see all of their voicemails on the Cisco IP Phone when the Messages button is selected from the phone. Visual voicemail requires Cisco Unified Communications Manager (CUCM) integrated with Unity Connection 7.0 or later. Cisco Unity voicemail has supported visual voicemail since Unity 5.0. Read more
Cisco Unified Phone Designer
The Cisco Unified Phone Designer is a downloadable Cisco Unified Communications widget that I will discuss in this blog. Read more
Third Generation Packet Voice DSP Modules
Cisco’s second generation integrated services router (ISR G2) introduces new digital signal processors (DSP) with up to four times the capacity of the Packet Voice DSP Modules used in the 2800 and 3800 series ISR routers. The 2800 and 3800 series router use PVDM2 (2nd generation) DSP modules on the motherboard of the router, while the 2900 and 3900 series ISR G2 routers ship with PVDM3 slots on the motherboard. Read more
ISR G2 Service Performance Engine (SPE)
In this blog, we will take a look at the Services Performance Engine (SPE) supported on the Cisco 3900 series router. The SPE is a modular motherboard design that allows customers to upgrade their routers core functionality without performing a forklift upgrade. The concept is very similar to the modularity that has allowed the following routers and switches to persist for close to or over a decade:
•7200 series router input/output (I/O) module Read more
•7500 series router – route switch processor (RSP) / versatile interface processor (VIP)
New EtherSwitch service modules on ISR G2
This blog will discuss the Power over Ethernet (PoE) service modules (SM) supported in the second generation Cisco Integrated Services router (ISR G2). Read more
Survivable Remote Site Telephony
The Cisco IOS gateway class of service configuration is accomplished using corlist configurations in the gateway. This blog is a continuation of the last CORLIST blog.
The incoming corlist (keyring) configuration to meet the class of service requirements is as follows:
Dial-peer cor list lobby_cos Read more
Member e911
!
Dial-peer cor list intern_cos
Member e911
Member local
!
Dial-peer cor list employee_cos
Member e911
Member local
Member longdistance
!
Dial-peer cor list manager_cos
Member e911
Member local
Member longdistance
Member international
Survivable Remote Site Telephony
In this blog, I will explain the Cisco IOS technique of applying class of service (CoS) restrictions. Previous blogs have covered calling search space (CSS) and partition configuration in Cisco Unified Communications Manager (CUCM) which will handle CoS call restrictions during normal operation of the network. Branch sites using Cisco Unified Communications Manager Express (CUCME) must rely on the Class or restriction list (CORLIST) functionality that is discussed in this blog. Read more
NEW Cisco Routers! ISR G2
Cisco announced the ISR G2 routers today (integrated services router - second generation). This blog interrupts the SRST blog series, but I will get back to that conversation very soon. Let's take a look at the ISR G2 routers...
The ISR G2 router families include the following models listed from smallest to largest form factor:
• 800 Series Routers (860, 880, 890) Read more
• 1940 Series Routers (1941, 1941W)
• 2900 Series Routers (2901, 2911, 2921, 2951)
• 3900 Series Routers (3925, 3945)
NEW Cisco Routers! ISR G2
Cisco announced the new Cisco ISR G2 routers today (integrated services router - second generation). This blog interrupts the SRST blog series, but I will get back to that conversation very soon. We will take a look at the ISR G2 routers in this blog.
The ISR G2 router families include the following models listed from smallest to largest form factor:
• 800 Series Routers (860, 880, 890) Read more
• 1940 Series Routers (1941, 1941W)
• 2900 Series Routers (2901, 2911, 2921, 2951)
• 3900 Series Routers (3925, 3945)
Survivable Remote Site Telephony
In this blog, we will investigate redirected dialed number identification service (RDNIS) to aid our understanding of the requirement when forwarding calls from a branch site location to a centralized voicemail solution when the WAN link is down.
Let’s take a look at an RDNIS example… We will discuss the calling (ANI) and called (DNIS) party information transmitted for a call forwarded to voicemail. Read more
Survivable Remote Site Telephony
In this blog, we will discuss SRST voicemail capabilities. The information in this blog assumes some information from previous blog postings on SRST. This SRST blog is the eighth SRST post in the SRST blog series. Read more
Survivable Remote Site Telephony
This blog will continue the SRST conversation that we have been having over the last six blogs. During normal operation, most implementations of Cisco Unified Communications Manager (CUCM) provide a secondary (stutter) dial tone after the access code of 9 is dialed. The 911 route pattern must be configured to provide an outside dial tone in addition to all the other route patterns beginning with a 9. Read more
SRST
In this blog, we will continue discussing more configuration options available in Survivable Remote Site Telephony (SRST). All of the configuration command examples in this blog are configured in call-manager-fallback configuration mode. Read more
Survivable Remote Site Telephony
In this blog, we will discuss SRST in more detail. Remote site MGCP gateways must be provisioned with MGCP fallback to route calls to and from the PSTN when the MGCP call agent (CUCM) is unreachable. This blog will cover the options to configure TDM call routing over a remote site gateway in SRST mode. Read more
MGCP fallback will allow inbound call routing over any MGCP controlled endpoint (TDM voice port).
- About Cisco Unified Communications
Dennis Hartmann, CCIE No. 15651, is a consultant with www.highpoint.com and author of Implementing Cisco Unified Communications Manager, Part 1. Dennis is also a lead instructor at Global Knowledge. Dennis has various certifications, including the Cisco CCVP, CCSI, CCNP, CCIP, and the Microsoft MCSE. Dennis has various specializations including unified communications, data center, routing & switching, service provider (MPLS and optical). Dennis has worked for various Fortune 500 companies, including AT&T, Sprint, Merrill Lynch, KPMG, and Cabletron Systems. He lives with his wife and children in Hopewell Junction, New York.
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