How to Ring a Analog phone and Ip Phone at the same time

Answered Question

Short Story:

Customer has a House/Office next to each other. The office has a Callmanager/Ip Phones, the house only has a couple analog phones.

They want to be able to pickup/answer the house phone line (analog) with the Ip Phones in the office.

The thicket:

They need caller id. So the router/gateway has to be H.323. (MGCP would be easy)

Issue: If I share the inbound analog line with the house phones, and the router, the router controls the line, and stops the house phones from ringing after the 1st ring, but the caller still hears rings. The analog phones at the house go to a "Line in Use" state after one ring.

Any tips/tricks? I'm assuming there is some sort of line control setting on the router to tell it not to "Control" the line??? Until answered??

I have this problem too.
0 votes
Correct Answer by mscane about 9 years 7 months ago

It sounds like your analogue phones are connected directly to the exchange lines as well as the router's FXO interface.

If that is the case and the router is answering the call after 1 ring check to make sure that you are using "connection plar opx" in your voice-port configuration

The opx option tells the router not to answer the call until the IP handset has been picked up. This should allow the analogue handsets to keep ringing until the call is answered by the analogue or IP handset.

Another option is to put the analogue handsets on FXS ports or an ATA. Not sure if callManager supports a parallel hunt group (all members ring at the same time) though. You could implement that with a little bit of TCL scripting on the router though.

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Overall Rating: 4.3 (4 ratings)
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Aaron Harrison Tue, 05/01/2007 - 01:31

Hi Mike

The only way I've found to get an FXS and an IP endpoint to ring at the same time is to use STCAPP.

If you've not used it, basically it's a bit of software (built into recent voice IOS releases) which registers FXS ports using SCCP to CM or CME.

As phones are represented as SCCP devices, you can add them to hunt groups, overlays, etc just like IP phones.

I can't tell you whether or not caller ID is supported or not unfortunately... but it will at least get you simultaneous ringing.

Config example (for CME, all except the ephone bit will be the same).

stcapp ccm-group 1

stcapp

!

stcapp feature access-code

!

voice-port 2/0/0

cptone GB

timeouts interdigit 5

sccp local Vlan1

sccp ccm 11.10.10.254 identifier 1 priority 1

sccp

sccp ccm group 1

associate ccm 1 priority 1

!

dial-peer voice 200 pots

service stcapp

port 2/0/0

!

ephone 12

mac-address 9560.43B5.8407

type anl

button 1o3,21,22,23,24

See:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124newft/124t/124t2/ht1vg224.htm

Regards

Aaron

Please rate helpful posts...

l.mourits Tue, 05/01/2007 - 13:53

Hi,

What is in between the house and office, in terms of connectivity?

If there is IP based connection in between, most easy solution is buying an ATA and configure the ATA and IP phone with a shared line.

HTH,

Leo

mscane Tue, 05/01/2007 - 16:57

It sounds like your analogue phones are connected directly to the exchange lines as well as the router's FXO interface.

If that is the case and the router is answering the call after 1 ring check to make sure that you are using "connection plar opx" in your voice-port configuration

The opx option tells the router not to answer the call until the IP handset has been picked up. This should allow the analogue handsets to keep ringing until the call is answered by the analogue or IP handset.

Another option is to put the analogue handsets on FXS ports or an ATA. Not sure if callManager supports a parallel hunt group (all members ring at the same time) though. You could implement that with a little bit of TCL scripting on the router though.

Correct Answer
mscane Tue, 05/01/2007 - 19:17

It sounds like your analogue phones are connected directly to the exchange lines as well as the router's FXO interface.

If that is the case and the router is answering the call after 1 ring check to make sure that you are using "connection plar opx" in your voice-port configuration

The opx option tells the router not to answer the call until the IP handset has been picked up. This should allow the analogue handsets to keep ringing until the call is answered by the analogue or IP handset.

Another option is to put the analogue handsets on FXS ports or an ATA. Not sure if callManager supports a parallel hunt group (all members ring at the same time) though. You could implement that with a little bit of TCL scripting on the router though.

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