Hair-pinning Or redirecting a call from Gateway

There are times when you would like to forward a call coming into your gateway out to PSTN before it goes to Call manager. Reason could be WAN outage to Call managers or Call manager down situation. This is how you can route out an incoming call out of the gateway. Let suppose the mainline number coming into the gateway is ‘881456’. The following setup will route the call out of the gateway to PSTN. voice translation-rule 10 rule 1 /881456/ /901139886666/ ! voice translation-profile RedirectPSTN translate called 10 ! dial-peer voice 10 pots description Incoming Dial Peer translation-profile incoming … Continue reading Hair-pinning Or redirecting a call from Gateway

Scenario#33 – Phones not registering CUCME

Interesting case today. I had a call from customer saying they had a power cut and when the power was restored all their phones went into ‘Registering’ status. I initially thought it could be a network issue from switches to CUCME gateway as the config was looking fine to me. I did a show ephone summary and found all of them in ‘Unregistered’ status. Nothing changed really, the config was all ok and these phones were all working fine few minutes before. So what has gone wrong? I started going through the config if anything has changed but nothing changed. … Continue reading Scenario#33 – Phones not registering CUCME

CME Paging

A paging number can be defined to relay audio pages to a group of designated phones. When a caller dials the paging number (ephone-dn), each idle IP phone that has been configured with the paging number automatically answers using its speakerphone mode. Displays on the phones that answer the page show the caller ID that has been set using the name command under the paging ephone-dn. When the caller finishes speaking the message and hangs up, the phones are returned to their idle states. SAMPLE CONFIG: ============= Ephone-dn 22  will be paging DN – the number you dial to broadcast … Continue reading CME Paging

Cisco 7931 Phone and Headset

The Cisco Unified IP Phone 7931 includes 24 buttons that can be assigned to lines and call features. A 3-color LED provides call status information for each line. The line buttons are numbered 24-1 from top to bottom. The numbers do not appear on the phone. There are two ways how the top four buttons can be programmed. enable configure terminal ephone template 15 button-layout set phone-type [1 | 2]** exit ephone 3 ephone-template 15 end ** Specifies which fixed set of feature buttons appears on a Cisco Unified IP Phone 7931G that uses a template in which this is … Continue reading Cisco 7931 Phone and Headset

Scenario#22 – ISDN user busy 0x8091

This was an interesting scenario where incoming calls were getting ‘user busy’ message at the gateway and an engage tone was heard at calling party side. *Aug 18 08:36:53.581: ISDN Se0/0/0:15 Q931: RX <-CALL_PROC pd = 8  callref = 0x8D7E Channel ID i = 0xA9839E Exclusive, Channel 30 *Aug 18 08:36:54.997: ISDN Se0/0/0:15 Q931: RX <- DISCONNECT pd = 8  callref = 0x8D7E Cause i = 0x8091 -User busy It was not just one extension but several extensions which were having the same issue. They were all running fine till yesterday! Something must have happened… I did debug voip ccapi … Continue reading Scenario#22 – ISDN user busy 0x8091

CME – Max calls, Busy Trigger & HuntStop

The concept of max-calls per button and busy trigger is quite easy but has been made complex. max-calls-per-button is used for maximum calls (incoming and outgoing) which can go through that line. busy-trigger-per-button is used to busy out incoming calls after the parameter set has been reached. So if an ephone has busy-trigger-per-button set to 2 and the phone has two active calls then the third call will go to voicemail (if set), busy tone or forwarded to another number if call-forward noan is set. huntstop channel is used on a shared line for incoming calls, rest of the channels … Continue reading CME – Max calls, Busy Trigger & HuntStop

CME – Automatic Line Selection

On multiline IP phones, lifting the handset automatically selects the first ringing line on the phone or, if no line is ringing, selects the first available idle line for outgoing calls. This is the default behavior for all multiline IP phones. It may be desired that a particular line be selected whenever an outgoing line is made. ephone 34 auto-line 3 answer-incoming •auto-line—Picking up the handset answers the first ringing line or, if no line is ringing, selects the first idle line. This is the default. •auto-line button-number—Picking up the handset for an outgoing call selects the line associated with … Continue reading CME – Automatic Line Selection