When configuring a SIP Trunk with Unified Communications Manager to a SIP Service Provider there is a need to use a router running CUBE (Cisco Unified Border Element) between UCM and the provider offering the SIP Trunk. One benefit is this automatically alleviates the challenges most IP PBX’s face with hosted nat traversal specific to [...]
Archive for the ‘SIP’ Category
Cisco CUBE: Modifying a SIP Diversion Header with SIP Profiles
Posted: 5th July 2010 by Mark in Cisco, SIP7
The Broadworks platform uses an enhanced algorithm called Overload Control to offer protection when a cluster node is under severe conditions. The goal is that during an overload period of 150% the throughput will be no less than 90%. Behavior of the Application Server is dependent upon a series of configuration parameters configured through bwcli. [...]
Acme Packet SIP Header Manipulation Rules
Posted: 23rd April 2010 by Mark in Acme Packet, BroadWorks, SIPThis is an example of how to modify a SIP header with an Acme Packet Session Border Controller (SBC). An SBC is a device most commonly used by Service Providers to provide topology hiding between their SIP platform and the public Internet. In the most simplistic terms think of it as a Cisco PIX or [...]
I acquired a used CUE module running CUE 2.1.2 and wanted to proceed upgrading the module to CUE 7.0.3. The only way to upgrade CUE is through FTP. Here is the procedure. First thing I needed to do was install vsftpd on my RHEL 5 Client Workstation. If you are running CentOS or Fedora you [...]
Recently I needed to change the firmware on some Cisco 7965 phones from SCCP to SIP. By far the simplest method is loading the COP file on UCM and letting the phone upgrade on its own. In my case, this upgrade was being done without using UCM. The Cisco read-me doc for the SIP firmware [...]
As the database grows on the Broadworks Application and Network servers there will be a need to change the memory allocation for the TimesTen datastore. The Maintenance Guide does not contain all the required steps. The rule of thumb is the allocated “perm” size should not exceed more than 25% of total system memory and [...]
There are two ways to install CME on your router. One is to log into CCO and navigate to the Voice software section and download the zip file. Inside this zip file are several tar files which need to be extracted via TFTP in to the router’s flash. This takes a while because there are [...]
This is for the folks who feel lost because they switched from PC to Mac and do not know how to console into their Cisco router. The program you want to use in OS X is screen and it is already included in the OS X operating system. I am using an IOGEAR GUC232A USB to [...]
I recently ran into an issue where a calling party from the PSTN was calling a Broadworks subscriber who is using a TDM PBX with a PRI connected to an Adtran TA900. The subscriber enabled call forwarding on their PBX to forward calls out to the PSTN. The issue is that Broadworks would tear down [...]
Someone recently asked me how to configure more than one PRI on a Cisco Router to support VoIP to PSTN calls. Their exact words were inquiring based on the premise “..in case a PRI fails” but in the configuration I am going to take it one step further. I am using a similar configuration in [...]