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Is the router behind the ASA? &nbsp;Have they opened the required ports on the router to allow the communication?<br />
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I would assume some port forwarding would be required as well.
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Is the router behind the ASA?  Have they opened the required ports on the router to allow the communication?

I would assume some port forwarding would be required as well.

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Sometimes IT is just about keeping the customers productive.
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Sometimes IT is just about keeping the customers productive.

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I have an internal customer who purchased a Cisco Linksys E1200 router to replace his old one and now his Cisco Proxy Phone can not regisister to the the Call Manager (via ASA). &nbsp;<br />
I suspect some default security setting is messing this up. &nbsp;Anyone know what all needs to be permitted outbound for this to work?
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I have an internal customer who purchased a Cisco Linksys E1200 router to replace his old one and now his Cisco Proxy Phone can not regisister to the the Call Manager (via ASA).  
I suspect some default security setting is messing this up.  Anyone know what all needs to be permitted outbound for this to work?

Cisco Proxy Phone no longer works with Cisco Linksys E1200

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.

Routers

Cisco PIX is a dedicated hardware firewall appliance; the Cisco Adaptive Security Appliance (ASA) is a firewall and anti-malware security appliance that provides unified threat management and protection the PIX does not. Other Cisco devices and systems include routers, switches, storage networking, wireless and the software and hardware for PIX Firewall Manager (PFM), PIX Device Manager (PDM) and Adaptive Security Device Manager (ASDM).

Cisco

IP telephony (Internet Protocol telephony) is a general term for the technologies that use the Internet Protocol's packet-switched connections to exchange voice, fax, and other forms of information that have traditionally been carried over the dedicated circuit-switched connections of the public switched telephone network (PSTN). Using the Internet, calls travel as packets of data on shared lines, avoiding the tolls of the PSTN. The challenge in IP telephony is to deliver the voice, fax, or video packets in a dependable flow to the user.