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Cisco IP phone


Our company is moving into an office, we have a few Cisco 7961G IP phones. We wanted to use them as normal phones, one phone per person and also we have one BT line per person.

The problem is that, we have realised that these phones can only be used over the data networks.

I am wondering whether we can use our IP phones (VoIP) instead of normal phones, that is, make and receive calls to and from landlines, mobiles and international calls.

I am new to VoIP and I wanted to know what do I need to be able to use the phones. We have an 8 Mb ADSL provided by BT.


Cisco Employee

Re: Cisco IP phone

There are 3 flavors of SW that run on the phone, the callmanager image runs SCCP and must be used with callmanager. the SIP load lets the phones be a SIP device and there is an MGCP load which lets the phones be controlled by an MGCP call agaent. The phones can't do much by themselves, there needs to be a callmanager , SIP proxy or Call agent availible to provide the intelligence needed to route calls and provide features.

Phone SW is here:

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