Questions tagged [cisco-voip]

For questions about or involving VoIP on Cisco products. For instance, you want to setup a new IP telephone and need to configure your network to support VoIP or you are installing a new Cisco call manager.

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Assigning static IPs to VoIP phones in packet tracer

Is there a way to assign IPs and dn to VoIP phones in a network configuration without using DHCP? Such that if I have PCs and VoIP phones connected to the same switch, which is connected to a router ...
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923 views

How to set up VoIP inside local network without a VoIP server?

I have a task to set up VoIP inside a small network (~20 Cisco IP Phone 303). Only for calls inside the local network. I have no previous experience with VoIP and I want to do everything in the most ...
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470 views

Cisco SMB Switch Configuration for VOICE VLAN and DATA

I am hoping to get some assistance with a current issue I am facing at the moment... I have 3 Cisco SMB Switches, (2) SG300 Managed Switches and (1) Unmanaged Switch. SWSG1 | 172.16.1.100 | Port 24 ...
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1 vote
2 answers
620 views

How to remove voice-port directive from IOS Configuration

I'm running an old Cisco 1751-V for years now as ISDN-SIP-Gateway. Deutsche Telekom is getting rid of ISDN more and more and lately, ISDN-VoIP config is no longer necessary on my side. Since the ...
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TCL Tool Command Language tclsh - Script for Cisco SPA508G Phone Sidecar Auto-attendant

Using Cisco SPA508G phones with SPA500S Sidecar Console. In the Cisco UI Sidecar programming is the script: fnc=blf+sd+cp;sub=108@$PROXY;nme=Steve J. I need both sub=108@$PROXY and sub=408@$PROXY ...
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Configure C1861 for SIP to FXS port [closed]

I found a C1861 ISR router and I would like to play with it a learn some telephony. I signed up for a VOIP service so I have SIP credentials. Is there a simple walkthrough anywhere to set up the SIP ...
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2 votes
2 answers
327 views

Forward single DID number to sip trunk

I am stuck on a project and need help. I have setup a SIP trunk on Cisco 2900 router to another vendors call server which is based on asterisk(custom application). We have phones register with the ...
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1 answer
599 views

Video conferencing on VOIP VLAN?

We already have a VOIP VLAN for Cisco phones on Cisco switches. A phone can be plugged into any building switch port and it just magically gets diverted onto its own private VOIP VLAN, away from the ...
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1 vote
1 answer
78 views

Cisco IP phone issue

This is a weird one I have 2 7960 ip phones using cme with a 2811 router, they worked flawlessly, then one decided to stop picking up so i opened it to re attach the handset spring. Then I connected ...
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1 vote
1 answer
630 views

Cisco 7960 SIP phone background image issues

I have an asterisk home PBX and I recently got a Cisco 7960G on eBay. So far I got everything working but the background images are quite tricky. I followed one short how-to and I was able to actually ...
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1 vote
2 answers
480 views

Calls show as blocked or restricted on US cells

When calling cells in US sometimes our company number shows as blocked or restricted. Our topology is CUCM 9.1 <-> 2921 VG 15.2(4) <-> T1 PRI Our telco advised to make sure we have ...
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2 answers
207 views

One-way calls Cisco 7936

We have been experiencing an issue with one-way VOIP calls from our Cisco 7936 conference phone, as of late. Initially, the call starts off OK, but after few minutes remote leg drops and they cannot ...
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3 votes
1 answer
577 views

Call is disconnected after huntstopped to another phone

We've been having an issue at the office with our Cisco CME. Here's the situation. Phone A (outside line) dials into the main line and after ~three rings the call is huntstopped to four other phones. ...
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2 votes
1 answer
753 views

How does "dual-line" feature work on Cisco/Avaya IP phones for VOIP?

For below CME configuration which I configured on UC500 where ephones are not configured with dual-line feature and in button command separator 'c'(call waiting) is used. CME_VOICE(config)#ephone-dn ...
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1 vote
1 answer
209 views

FXO to GSM routing

I am new to VoIP so apologize if this is a dump question I want to accept a traditional telephone call (FXO) channel and based on the callers extension selection I want to switch the call to set of ...
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3 votes
1 answer
356 views

H323 Gateway configuration

I configured a Cisco H323 Gateway between 2 CUCMs connected via Intercluster trunk(non-gatekeeper controlled) Dial peer configuration is : dial-peer voice 10001 voip destination-pattern 3971... ...
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1 answer
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How can I see if this line is an isdn30 line?

I got an port here from somewhere, and I'm guessing its an isdn30 line but I'm not sure. How can I check if its indeed an isdn30 line? I can plug my laptop in with an utp-cable but is there a program ...
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5 votes
2 answers
5k views

Can't configure the Cisco CP-8851 IP Phone

I do not have a cisco contract or license, but I did order the Cisco CP-8851 IP Phone from Amazon, and was hoping that I could configure it to work with my VoIP SIP PBX. But I can't seem to log into ...
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1 vote
0 answers
776 views

Cisco CME Failing to Transfer Calls From SIP Trunk, via Watcher Button [closed]

So, I have run into an issue that is stumping me. I have a Cisco 2811 running 15.1(3)T4, and I am using it to run CME on a small (three phone) VoIP system. The system has a SIP trunk through Vitelity. ...
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2 votes
0 answers
161 views

Determine if cisco phone is on POE or adapter remotely

I'm looking to find out if there is a way to know if a Cisco phone (7940,7960,7911's and the like) either through Cisco Callmanager or through the direct Web interface on the phone. I'm looking for ...
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6 votes
3 answers
26k views

CUCM 10.5 - Reset Admin name & password

I need to reset my CUCM Admin password and name. On previous versions of Cisco Call Manager, I had to log in to CLI and run these commands : utils reset_ui_administrator_name utils ...
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2 votes
2 answers
363 views

Is it possible to run CME in a Cisco 1812

I have a router Cisco 1812 (P/N CISCO1812/K9). My question is if it possible to run Call Manager Express into its IOS and which version.
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8 votes
1 answer
382 views

Cisco callmanager SIP features

I am a programmer working in a software for the sales dept. I would like to know if a feature I want to implement is possible or not. The user has an application where he can see information about a ...
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7 votes
1 answer
3k views

What is the relationship between "System version" and CUCM update versions?

I am writing code to verify that the version I retrieved from CUCM/CallManager (e.g. 7.1.5.34900-7) includes a security fix found in a particular patch/update (e.g. 7.1(5b)su6a). Given that these two ...
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6 votes
3 answers
14k views

Cisco IP Phone 7900 Series - Auth Fail on boot

I have several hundred Cisco 7900 series IP phones, (7911, 7942, and 7962 models) that have been sitting on the shelf as replacement stock for several years. Now as we deploy them, we are ...
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