Remote IP Phones

[MitelAU]

Hi Guys

I have a customer who would like to connect 2 remote IP Phones in 2 different locations without a teleworker solution.
What would be the best way to approach this?

Thanking you in advance

Knowledge is power!

 

[Lundah]

Is the IP network from the host site (where the PBX lives) extended out to the remote sites? If not, you can't do this without TW.

 

[MitelAU]

Lundah

Yes it is extended to remote sites.

Knowledge is power!

 

[Lundah]

This can be done. Just be sure to open any required firewall ports, if one exists between the sites. Just configure the IP address of the "host" PBX, either in the static config on the remote phone, or via the DHCP options of whatever DHCP server you're using at the remote site.

 

[Lundah]

Also, you will want to restrict the remote phones from dialing emergency services (911/999), since the phones are not at the same address as the PBX (and therefore the telco trunks).

 

[MitelAU]

Lundah,

DMZ or open specific ports.What are the specific ports?

Thank You

Knowledge is power!

 

[MitelInMyBlood]

We (prior to purchasing TW) set up a number of remote IP phones in employee homes using a Cisco 831 DSL router to create a VPN lan extension & split tunnelling (so local surfing requests would go to the local ISP rather than through the office). The advantage of this solution was that we could give the user *any* Mitel IP phone, not just those that support TW. At the time I had a 5140 at home.

The downside was it began to get expensive as the needs grew. Think we paid about $400 a shot for the 831's + the cost of the phone & license. With TW and something like a 5212 we can get by for less than that including the phone.

 

[MitelInMyBlood]

The remaining issue (for TW as well) is how to (legally) address 911/999. In our highly litigious society now our legal dept wants us to include a LIM module and routing to send 911 out the local POTS line and block it in the PBX with COR, but here we go driving up costs again and in this day some people no longer have POTS lines at home and/or have alternate services like Vonage that don't provide enough loop voltage for the LIM to be happy, so now we're even having to pay to have conventional landline pots service installed then another fee for 'no-PIC' to block LD. - Then the employee leaves the company and you're stuck having to get those services removed and recover your equipment. At the rate it's going I forsee the day where TW administration will eventually become someone's full time job and that's not what the intentions were when conceived.

 

[Lundah]

DMZ? I thought these sites were all on the same network? See the Engineering Guidelines document (edocs.mitel.com) for the specific port ranges you need open.