Nortel SIP Proxy Server

[chrisay59]

Guys, just a simple question.....is there anyone out there that is using a SIP Proxy Server to connect to the outside world whereby a carrier is providing you with SIP Trunks rather than good old fashioned ISDN/QSIG/DPNSS etc?

 

[Tman45]

We are not using SIP yet, but yes you just get SIP trunks from the carrier and have to 'flash' the firmware on your Nortel phones (or any other brand that supports SIP).

 

[DocVic]

We stopped using SIP for customer calls. The quality is terrible. Our customers expect one call with no 'What?" questions, because of call clipping. VoIP is all hype created by Cisco. Unless you can afford QOS, don't do it!

DocVic
Dedicated to Nortel Products till the end.
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[dgrizzard]

Currently using the Verizon IP trunking service (with QoS) and it works great. Can't tell the difference between a SIP call and a toll call.

 

[gwebster]

Tman45 - using SIP Trunks to a Carrier is totally unrelated to the types of phones (analog, digital, IP UNIStim, IP SIP) used either on the CS 1000 end or on the other end. A SIP trunk can eventually terminate on any of those types of phones.

 

[Tman45]

Thanks gweb - I was always thinking that you needed SIP flashed phones to work on the SIP endpoints. Maybe that is where I am confusing things? The SIP trunks can do analog, digital, UniStim, SCCP etc.
All I know is at my old company we were trying to flash Cisco phones to SIP and setup SIP endpoints, but we didn't have the endpoints setup yet, and I left the company shortly after so I never saw it working (that was 5 years ago).