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mpaoperator's profile

Tutor

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12 Messages

Thursday, April 4th, 2024 11:10 PM

Adding a SIP phone

We just switched to gigabit fiber at our main office which has 4 physical (POTS) phone lines. 2 lines are connected to the modem (I think a BGW320) and two are connected to a second box plugged into the modem. We'd now like to get the service at our satellite office, which uses Polycom SIP phones via Ethernet, using a SIP box from Comcast. How would we use the SIP phones with ATT's service? How could we add SIP phones at our main office service?

ACE - Expert

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35.8K Messages

2 months ago

To use SIP phones, you need a VOIP provider who will support the SIP phones of your choice.  Currently you apparently have AT&T Voice, which provides its own ATA adapter built into the Gateway (and in your case, apparently some sort of additional external adapter).  You may find that the AT&T Voice service will interfere with your other VOIP provider.

Tutor

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12 Messages

2 months ago

For the other office, we don't plan to keep the other provider (Comcast) but to completely replace it. But we'd like to continue using the SIP phones we already have.

For the office just upgraded, the question is how to add additional phones, to add SIP in addition to the existing POTS lines. I haven't found anything in the online menus that suggests a way to do this, like perhaps ordering another number or being able to answer the existing numbers using a SIP phone. 

I'd like to get some idea of what's involved before spending a long stretch on hold to talk to a salesperson. 

ACE - Expert

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35.8K Messages

2 months ago

You keep using the word "POTS."  I don't think that word means what you think it means. ;-)

The preferred term for a phone with an RJ11/RJ14 cord that plugs into something else would be an "analog phone."  They can be plugged into the jack on the back of a Gateway, an VOIP ATA or the wall jack of an actually POTS-connected home.  In your case, you have AT&T Phone VOIP service which provides several lines accessible by analog phones.  POTS means the analog line comes into your home in analog form.  Now, having beat the terminology horse to death...

As far as I know, AT&T Phone only supports analog devices plugged into their provided/imbedded ATAs, not independent SIP phones.  I would talk to my friendly business telephony salesman at AT&T and see what he says, and ask for him to follow up anything he says with links to a website or something in writing describing it all.

(edited)

ACE - Professor

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5.7K Messages

2 months ago

ATA being analog telephone adapter.  

The gateway itself supports SIP, or at least doesn’t overtly block it.  I also know what a polycom phone is but am not aware of the prerequisites required to use it.  What you’re getting with Att Internet is an Ethernet connection fronted by an Arris router.  

If you’re running a business, why not deal with the part of Att that deals with this area instead of a basic consumer grade service?

ACE - Expert

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35.8K Messages

2 months ago

FTR, Polycom is a manufacturer of phone equipment.  Polycom phones could be analog or digital.  A Polycom SIP phone would be a digital phone that directly supports the VOIP SIP protocol without needing an ATA.  It also cannot use an ATA because it won't have an analog port.

Community Support

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232.8K Messages

2 months ago

Hi @mpaoperator, thank you for your interest with AT&T services. We understand that you are looking to get a new SIP phone service at your office. Let's guide you in the right direction to get the help with your concerns.

 

The Community Forums are a public support option where other users, and AT&T, will try and assist with high level support needs. This means we won’t be able to look into account specific concerns. To get the help you need for your Business Account, please review our https://bizcommunity.att.com/, and choose the best option to reach out to us. Thank you for choosing AT&T”.

Thank you for contacting AT&T Community Forums.


Jasmine, AT&T Community Specialist

ACE - Professor

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5.7K Messages

2 months ago

@JefferMC 

I've only ever seen them used in large corporate environments, so I don't know but imagine some additional infrastructure might be needed for them to function, a server perhaps which a gateway wouldn't likely have.

ACE - Expert

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35.8K Messages

2 months ago

There are two Polycom SIP phones sitting in my church right now.  They barely get used because everyone prefers to just use their cell phone.  The SIP passes through the Internet modem/router to the phone just like it would to an ATA connected to an analog phone.  Our VOIP provider requires no on-site equipment.  We chose them because they were one of the ones that didn't want to put a separate box in the building.

Employee

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200 Messages

2 months ago

So standard ethernet connection?

ACE - Expert

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35.8K Messages

2 months ago

Yes.  

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