Voice over IP

Our SIP providers is saying we should configure our UC520 to communicate with their proxy sip devices for more security between us and them. can anyone give me an ideas of how to configure ALG from UC520 to a SIP proxy. The current setup works fine b...

Hi all,I wonder how many concurrent VOIP calls can handle Cisco ASA 5510, any idea?Gegham

hi i have an mpls nework with equipment cisco 2821, 2901 and 2801, and i have problems with fax calls, i configured the fax protocol t38 in all routers but when i want to send a fax to the 2821 equipment from either 2801 and 2901, the protocol t38 is...

Dear AllI downloaded the CUCM 8.5 IOS upgrade from cisco.So how can I have My software  feature License? because it's missing.What should I do?

I found a really sueful service to make nd configure our own VoIP thru our ECS server.Would be feasible simple steps to folllow..Kindly try this outwww.voip-sip-sdk.com/p_29-how-to-configure-ozeki-voip-sip-sdk-with-sipx-ecs-voip.html

We have changed IP addressing of  our VoIP phones from Public Range to Private 10.x.x.x. Our Main Site IP  addresses change took place before I started so don't know if some  configuration change was made on CUCM 6.1.3 to make it work. I changed  the...

Hi,Is it perhaps possible that i can activate a command (ios) from a Cisco phone (Callmanager Express) ?Perhaps by the service button.. or perhaps with a tcl script? so that you call to the AA for example and you can then activate the tcl script..Som...

Hi Everyone,we have customers who is complaining about disconnected calls when muted, it seems that the calls are dropped from the cisco 5850 or pgw2200 after exactly three minutes, is there some parameter to level this up, I've been looking all arou...

Hello to all , I have a server with Cisco CallManager 4.0 . I was installed cisco Attendant console , but now I have a problem : users cant authenticate :The message is : Invalid password , please try again . Can you help me ?Thanks and best Regards ...

hiI need to know that Cisco Mobile 8.0 is supported in CUCM 8.0.2 or must be CUCM 8.0.3

HiI have a cius registred on CUCM 7.1.5 20000 -6 with device pack 7.1.5.34074-1, the phone can make and receive calls but i can't hear anything in the handsets (and speaker), even not the dial tone.Cius is connected to a UC500 (just to have PoE, i do...

hello how can we integrate contact centre with cme is contact center need seprate hardware

Hi All,I have been trying to configure an 8941 ip phone on our call manager system version -  7.1.5.33900-10I have downloaded the files below, followed the relase notes and FTP's the files and installed it in CU OS Administrationcmterm-894x-qed.9-2-2...

hi friends,           i need fail over for the extension mobility with the call manager 8.5. i can access the EM services if the first node's(publisher's) services are all down. i have installed a publisher and subscriber(cm 8.5). but i have a doubt ...

Hello All,                  I am using Cisco call manager 6.0 and i am using public IP on it.I configure it well now my phone are registered from every network but i have one problem that my voice is going but i can't hear the another side voice. On ...