[Asterisk-Users] Cisco 7940 and multiple simultaneous calls

[Chris Wade]

C F wrote:
>>These phones simply realize that the account information for both lines
>>is the same and assumes (possibly incorrectly) that it should accept
>>calls to that 'account' on all lines with that account.
> 
> 
> "possibly incorrectly" I think you are incorrect, this has the *best*
> result, it will just ring the second line when a second call comes in.
> 
> 

I'm just saying that the phone should be 'dumb' and just do what it is 
told to do instead of assuming anything.  However, in the case of the 
cisco phones, there isn't a config option of which way it should work - 
assuming it is, after all, the phone doing all this.  Either way, I 
agree that this is the *best* solution if you really need that many calls.

>>This disables the phones ability to handle two incoming calls per line
>>button however.
> 
> 
> Maybe, I use it with disabling call waiting, so I dont realy know if
> this is true, in any case besides for disabling or not disabling the
> second call on the same line, it will also rollover to the next
> button, but this is the desired result in most cases, other wise why
> don't you use a different sip account for the next button, if you are
> using the same sip account, then you want the second call to go to the
> next button (unless you want 12 calls on a Cisco 7960?).
> 
> 

If my memory serves me correctly, what I described is indeed the way it 
works.  As for your last statement/question, some people do want 12 
incoming calls on the 7960.

>>My work-around, and I'm sure many others too, was to create a -a and -b
>>'account' for each 'account' and then do dialplan rollover to make the
>>7940 accept two calls per line button, or 4 simultaneous incoming calls.
>>  The 7960 could accept 12 simultaneous incoming calls this way using a
>>-a through a -f 'account'.
> 
> 
> Correct, but it's usualy much better and easier to have the phone
> handle the rollover, who needs more than 6 simultanewous calls? whats
> wrong with call parking if you do need more than 6?
> 
> 

It's up to the individual installation as to which method is better. 
I've setup both before and even the individual station user typically 
had a preference of which way it worked.  I've yet to see somebody 
actually need even 6, but who knows.  And nothings wrong with parking, 
just didn't bring it up cause it was somewhat OT.

>>-Chris
>>
>>PS: Haven't checked this, but the phone may actually register per 'line'
>>meaning it would register multiple times, but since ALL the details of
>>the register are the same, * just treats it as a re-register and neither
>>* nor the phone know the difference, so both 'work together' to produce
>>this effect.
> 
> 
> It's possible, since it comes from the same IP address asterisk knows
> that it's the same and doesn't give any errors (I never tried with sip
> debug, so I don't know), but I think it's actualy the phone that does
> it, in any case it doesn't matter, as long as it works.
> 
> 

Same here, haven't done a debug to see what is actually happening, but 
it just works :)

-Chris