# Multiple SIP handsets, one extension?

**URL:** <https://community.asterisk.org/t/multiple-sip-handsets-one-extension/216>\
**Category:** Asterisk Support\
**Created:** [May 2, 2005, 8:08pm UTC](https://community.asterisk.org/t/multiple-sip-handsets-one-extension/216 "2005-05-02T20:08:35Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![DevGuy](https://avatars.discourse-cdn.com/v4/letter/d/c0e974/32.png) [@DevGuy](https://community.asterisk.org/u/DevGuy)\
**Post date:** [May 2, 2005, 8:08pm UTC](https://community.asterisk.org/t/multiple-sip-handsets-one-extension/216/1 "2005-05-02T20:08:35Z")

</div>

Have been unable to get a conclusive answer on this:

- Can/how does Asterisk support multiple handsets registering as the same extension (preferably SIP)?

e.g. Would like to have a handset say at home that is configured the same as my extension at work - that way I can work from home or at the office and both handsets operate identically/transparantly (much like what Free World Dialup provides) …

Thanks gang,  
Tony

---

<div class="post-metadata">

**Author:** ![larsonc](https://avatars.discourse-cdn.com/v4/letter/l/3ab097/32.png) [@larsonc](https://community.asterisk.org/u/larsonc)\
**Post date:** [May 2, 2005, 9:14pm UTC](https://community.asterisk.org/t/multiple-sip-handsets-one-extension/216/2 "2005-05-02T21:14:06Z")

</div>

I would just setup a new extension and forward calls…

---

<div class="post-metadata">

**Author:** ![stoffell](https://avatars.discourse-cdn.com/v4/letter/s/8edcca/32.png) [@stoffell](https://community.asterisk.org/u/stoffell)\
**Post date:** [May 3, 2005, 8:47pm UTC](https://community.asterisk.org/t/multiple-sip-handsets-one-extension/216/3 "2005-05-03T20:47:08Z")

</div>

> [@DevGuy](#):
>
> Can/how does Asterisk support multiple handsets registering as the same extension (preferably SIP)?

It can’t.

The only ‘exception’ to this are the cisco 7940/7960 phones, they have multiple lines, but when you enter ‘the same’ sip configuration for more then 1 line, it only registers once (1!) with asterisk. I think you’re better of looking into call roll-over of ring-groups…

---

<div class="post-metadata">

**Author:** ![boomer](https://avatars.discourse-cdn.com/v4/letter/b/b5e925/32.png) [@boomer](https://community.asterisk.org/u/boomer)\
**Post date:** [May 4, 2005, 2:22am UTC](https://community.asterisk.org/t/multiple-sip-handsets-one-extension/216/4 "2005-05-04T02:22:52Z")

</div>

could you just set up a ring group instead?

---

<div class="post-metadata">

**Author:** ![zmanea](https://avatars.discourse-cdn.com/v4/letter/z/8dc957/32.png) [@zmanea](https://community.asterisk.org/u/zmanea)\
**Post date:** [May 4, 2005, 3:01am UTC](https://community.asterisk.org/t/multiple-sip-handsets-one-extension/216/5 "2005-05-04T03:01:07Z")

</div>

Have each phone use a seperate registration and then ring both phones with something like this:

exten =\> 1,1,Dial(SIP/phone1&SIP/phone2,15)  
exten =\> 1,2,Voicemail(u1)  
exten =\> 1,3,Hangup