[cisco-voip] Same DID for Phone and Fax

[Matthew Ballard]

I had looked into this previously myself, and decided against it.  From
what I remember, the only options were:

1)      The below option, which has the disadvantage that the caller
hears more rings before a phone actually rings, and it has to be long
enough for the various types of fax machines to generate the required
tone, in addition to the higher resource load on the gateway.

2)      The router listens into the call when answers (for x number of
seconds), and transfers it to the fax server if it hears the tone after
being answered by the phone or voicemail.  This has a major disadvantage
in that someone could answer the call and then be immediately cut off if
it is a fax.  This also has the higher gateway load.

3)      If your calls go to an auto-attendant first anyways (or straight
to voicemail for users without a phone), then it's pretty clean, as the
receiving system does the transfer as needed.

 

After looking at the options and discussing with my boss, we decided the
best choice was to have separate DIDs for voice vs fax.

 

Matthew Ballard

Network Manager

Otis College of Art and Design

mballard at otis.edu

 

 

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Fuermann, Jason
Sent: Wednesday, February 17, 2010 7:01 AM
To: 'Dew Swen'; Rameez Sardar
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Same DID for Phone and Fax

 

To my understanding, the script answers the call on the gateway,
provides ring back and listens for fax tones. It then decides where to
forward the call to. Doesn't sound to complex, but I don't know how many
calls a gateway can handle at a time.

 

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Dew Swen
Sent: Wednesday, February 17, 2010 3:19 AM
To: Rameez Sardar
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Same DID for Phone and Fax

 


I do not know the exact configuration but there is a tcl script which
understands the incoming call is whether voice or fax.

-
Dew Swen

On Wed, Feb 17, 2010 at 9:28 AM, Rameez Sardar
<ramizchaudhary at gmail.com> wrote:

Hi All,

 

I have IPT setup that includes Callmanager 6, cisco 2800 as voice
gateway and a range of DID. I am trying to configure gateway so that
same DID can be used for both phone and fax. Means if someone call on
DID it should be routed to call manager and then phone and if someone
sends fax on the same DID, it should be routed to Fax.

 

I studied some documents on this from cisco and got the idea but
configuration is not working. Can someone tell me the exact
configuration for this?

 

I read somewhere that this solution is not stable and has many issues
and complexity, if someone add comments on this.

 

Waiting your kind reply.

 

Thanks

 


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