IP Telephony and Phones

I upgraded a 2801 router from 12.4(24)T6 to 15.1(3)T2 and SCCP SRST stopped working (I've also tried 15.1(4)M2). It works fine on 12.4, but with 15.1, the phones never register. Debug ephone detail produces no output at all. The config is pretty basi...

Hello All,Unable to make outgoing calls via voice gateway incoming calls working fine .. outgoing calls are getting disconnected with message :     Cause i = 0x80AF - Resource unavailable, unspecifiedI have attached the debugs for outgoing calls. Can...

In Unity after TSP upgrade 8.4(3), Cisco Unity ports are not coming up.Does any one know the resolution? I tried to manually remove the TSP but still no progress.Facing below issue"An account with local administrator privileges must be used to upgrad...

Hi All,This is purely an FYI type post because I think it could be of help to some folks that might have experienced this without realizing the cause.I'm also posting it because any time I've described it to industry folks they say they've never hear...

Hi,I'm performing a migration from 5.1 to 8.6. Our customer has several MGCP gateways connected  against the CCM. IOS from gateways are 12.4.My question is, could we have problems between MGCP gateways and CCM 8.6 due an incompatibility between IOS v...

I have a UC540 that I have recently upgraded to software pack 8.2.0.  I amhaving problems with the message waiting indicator not coming ON when a new message is received.  I seems to be happening with all the phones at this time.  I configured the sy...

I just started at a company that is using CME at all the remote offices.  Although another department handles that, after spending several hours today troubleshooting a CME problem that ended up not being a network issue, I would like to start learni...

Hi I need to add a new site to an exisitng cluster which  means a new Region and Location. Can I add then during the day without effectng the devices?When I add a new Location do I have to re-sycnh bandwidth option and if so what is the effect on the...

Hello!I have C1861-UC-4FXO-K9 with HWIC-1T1/E1 module and I am trying to configure outgoing calls to PSTN via E1. The first thing I initialize the module and then configure controller E1:card type e1 0 2controller E1 0/2/0 channel-group 15 timeslots ...

I'm trying to find out some document/statement that talks about supporting UC apps on vSphere ESXi 5.0, either under TRC or spec-based model. Any chance somebody found something useful? There are tons of docs mentioning 4.0+ but I want to see explici...

Anyone know if you can use 8961 SIP phones with the WebEx Connect Client? Everything works fine until I try to switch WebEx Connect to "Use desk phone". It trys for a while then gives me "Service not Available" error message. 

Hi,Does anybody help me please how configure SIP trunk between Switchvox(digium) and Cisco Call Manager Express.I have both IP PBX in the same network:CME: 172.20.181.6Switchvox: 172.20.181.61Regards,Damjan Kosir