No. of IP Phones in CME or SRST

Dear All,
I have a situation in which I have to add more than 24 IP
Phones in
2801 .(The client has already purchased the router). I know
that Cisco
Documentation says that we cannot add more than 24 IP Phones
in CME or
SRST mode, but my question if I try to add more than 24
phones what
will going to happen. will the router deny me in adding more
phones or
will i be able to add more than 24 phones in CME or srst.

-- 
Regards,
Zohaib Shabir
Network Engineer(Voice)
DWP Group, TECH Division Karachi
Ph:+92-302-8232689
_______________________________________________
cisco-voip mailing list
cisco-voippuck.nether.net
h
ttps://puck.nether.net/mailman/listinfo/cisco-voip

you can add ephones up to the limit defined in max-ephone
under
telephony-service.

So if you have the following cfg.:

telephony-service
  max-ephones 24

you will NOT be able to add ephone 25
(same with SRST under call-manager-fallback)

Regards
Patrick

On Nov 26, 2007 4:41 PM, zohaib shabir <zohaibshabirgmail.com> wrote:
> Dear All,
> I have a situation in which I have to add more than 24
IP Phones in
> 2801 .(The client has already purchased the router). I
know that Cisco
> Documentation says that we cannot add more than 24 IP
Phones in CME or
> SRST mode, but my question if I try to add more than 24
phones what
> will going to happen. will the router deny me in adding
more phones or
> will i be able to add more than 24 phones in CME or
srst.
>
> --
> Regards,
> Zohaib Shabir
> Network Engineer(Voice)
> DWP Group, TECH Division Karachi
> Ph:+92-302-8232689
> _______________________________________________
> cisco-voip mailing list
> cisco-voippuck.nether.net
> h
ttps://puck.nether.net/mailman/listinfo/cisco-voip
>
_______________________________________________
cisco-voip mailing list
cisco-voippuck.nether.net
h
ttps://puck.nether.net/mailman/listinfo/cisco-voip

But you can't add more ephones than what the router
supports.
So you can't go into telephony-service and put in
max-ephones 25 in a 2801.

On Nov 26, 2007 9:52 AM, Patrick Diener
<patrick.dienergmail.com> wrote:
> you can add ephones up to the limit defined in
max-ephone under
> telephony-service.
>
> So if you have the following cfg.:
>
> telephony-service
>  max-ephones 24
>
> you will NOT be able to add ephone 25
> (same with SRST under call-manager-fallback)
>
> Regards
> Patrick
>
>
> On Nov 26, 2007 4:41 PM, zohaib shabir
<zohaibshabirgmail.com> wrote:
> > Dear All,
> > I have a situation in which I have to add more
than 24 IP Phones in
> > 2801 .(The client has already purchased the
router). I know that Cisco
> > Documentation says that we cannot add more than 24
IP Phones in CME or
> > SRST mode, but my question if I try to add more
than 24 phones what
> > will going to happen. will the router deny me in
adding more phones or
> > will i be able to add more than 24 phones in CME
or srst.
> >
> > --
> > Regards,
> > Zohaib Shabir
> > Network Engineer(Voice)
> > DWP Group, TECH Division Karachi
> > Ph:+92-302-8232689
> > _______________________________________________
> > cisco-voip mailing list
> > cisco-voippuck.nether.net
> > h
ttps://puck.nether.net/mailman/listinfo/cisco-voip
> >
> _______________________________________________
> cisco-voip mailing list
> cisco-voippuck.nether.net
> h
ttps://puck.nether.net/mailman/listinfo/cisco-voip
>
_______________________________________________
cisco-voip mailing list
cisco-voippuck.nether.net
h
ttps://puck.nether.net/mailman/listinfo/cisco-voip

Thank you for all the replies, but i have little confusion
in SRST
some routers(3800 series) have more capacity in SRST than
CME than why
not for 2801. Actually i have to do it in SRST mode.

On Nov 26, 2007 8:58 PM, Voice Noob <voicenoobgmail.com> wrote:
> But you can't add more ephones than what the router
supports.
> So you can't go into telephony-service and put in
max-ephones 25 in a 2801.
>
>
> On Nov 26, 2007 9:52 AM, Patrick Diener
<patrick.dienergmail.com> wrote:
> > you can add ephones up to the limit defined in
max-ephone under
> > telephony-service.
> >
> > So if you have the following cfg.:
> >
> > telephony-service
> >  max-ephones 24
> >
> > you will NOT be able to add ephone 25
> > (same with SRST under call-manager-fallback)
> >
> > Regards
> > Patrick
> >
> >
> > On Nov 26, 2007 4:41 PM, zohaib shabir
<zohaibshabirgmail.com> wrote:
> > > Dear All,
> > > I have a situation in which I have to add
more than 24 IP Phones in
> > > 2801 .(The client has already purchased the
router). I know that Cisco
> > > Documentation says that we cannot add more
than 24 IP Phones in CME or
> > > SRST mode, but my question if I try to add
more than 24 phones what
> > > will going to happen. will the router deny me
in adding more phones or
> > > will i be able to add more than 24 phones in
CME or srst.
> > >
> > > --
> > > Regards,
> > > Zohaib Shabir
> > > Network Engineer(Voice)
> > > DWP Group, TECH Division Karachi
> > > Ph:+92-302-8232689
> > >
_______________________________________________
> > > cisco-voip mailing list
> > > cisco-voippuck.nether.net
> > > h
ttps://puck.nether.net/mailman/listinfo/cisco-voip
> > >
> > _______________________________________________
> > cisco-voip mailing list
> > cisco-voippuck.nether.net
> > h
ttps://puck.nether.net/mailman/listinfo/cisco-voip
> >
>



-- 
Regards,
Zohaib Shabir
Network Engineer(Voice)
DWP Group, TECH Division Karachi
Ph:+92-302-8232689
_______________________________________________
cisco-voip mailing list
cisco-voippuck.nether.net
h
ttps://puck.nether.net/mailman/listinfo/cisco-voip

SRST will support many more phones than CME. While I'm not
to sure of the 
technical reasons, I have a feeling that because SRST is a
more simple, last 
resort system with fewer options, it does not require as
much memory as CME. 
While processing power has something to do with it, it is
also more likely 
memory.

The limits and memory calculations they give you are for
very simple router 
configs, i.e. only IP routing enabled. If you enable
anything else, oh, like 
DHCP, it eats away at memory and you will no longer be able
to add that many 
phones to the config. I had a conversation with a list
member off-line where 
he had a very simple config, had the memory they suggested
and was still not 
able to add the number of phones they listed as the limit.
So be prepared to 
add extra memory.

That being said, I do not think there is a limit check in
the IOS that says 
you can not add more ephones to a specific router. Just try
adding more and 
when you restart the router you will see an error message
that says "can not 
add dial-peer due to memory" or something like that.

Likely not supported, but I wouldn't doubt it if it will
work.

----- Original Message ----- 
From: "zohaib shabir" <zohaibshabirgmail.com>
To: "Voice Noob" <voicenoobgmail.com>
Cc: <cisco-voippuck.nether.net>
Sent: Monday, November 26, 2007 11:06 AM
Subject: Re: [cisco-voip] No. of IP Phones in CME or SRST


> Thank you for all the replies, but i have little
confusion in SRST
> some routers(3800 series) have more capacity in SRST
than CME than why
> not for 2801. Actually i have to do it in SRST mode.
>
> On Nov 26, 2007 8:58 PM, Voice Noob <voicenoobgmail.com> wrote:
>> But you can't add more ephones than what the router
supports.
>> So you can't go into telephony-service and put in
max-ephones 25 in a 
>> 2801.
>>
>>
>> On Nov 26, 2007 9:52 AM, Patrick Diener
<patrick.dienergmail.com> wrote:
>> > you can add ephones up to the limit defined in
max-ephone under
>> > telephony-service.
>> >
>> > So if you have the following cfg.:
>> >
>> > telephony-service
>> >  max-ephones 24
>> >
>> > you will NOT be able to add ephone 25
>> > (same with SRST under call-manager-fallback)
>> >
>> > Regards
>> > Patrick
>> >
>> >
>> > On Nov 26, 2007 4:41 PM, zohaib shabir
<zohaibshabirgmail.com> wrote:
>> > > Dear All,
>> > > I have a situation in which I have to add
more than 24 IP Phones in
>> > > 2801 .(The client has already purchased
the router). I know that 
>> > > Cisco
>> > > Documentation says that we cannot add
more than 24 IP Phones in CME 
>> > > or
>> > > SRST mode, but my question if I try to
add more than 24 phones what
>> > > will going to happen. will the router
deny me in adding more phones 
>> > > or
>> > > will i be able to add more than 24 phones
in CME or srst.
>> > >
>> > > --
>> > > Regards,
>> > > Zohaib Shabir
>> > > Network Engineer(Voice)
>> > > DWP Group, TECH Division Karachi
>> > > Ph:+92-302-8232689
>> > >
_______________________________________________
>> > > cisco-voip mailing list
>> > > cisco-voippuck.nether.net
>> > > h
ttps://puck.nether.net/mailman/listinfo/cisco-voip
>> > >
>> >
_______________________________________________
>> > cisco-voip mailing list
>> > cisco-voippuck.nether.net
>> > h
ttps://puck.nether.net/mailman/listinfo/cisco-voip
>> >
>>
>
>
>
> -- 
> Regards,
> Zohaib Shabir
> Network Engineer(Voice)
> DWP Group, TECH Division Karachi
> Ph:+92-302-8232689
> _______________________________________________
> cisco-voip mailing list
> cisco-voippuck.nether.net
> h
ttps://puck.nether.net/mailman/listinfo/cisco-voip
> 

_______________________________________________
cisco-voip mailing list
cisco-voippuck.nether.net
h
ttps://puck.nether.net/mailman/listinfo/cisco-voip

> Thank you for all the replies, but i have little
confusion in SRST
> some routers(3800 series) have more capacity in SRST
than CME than why
> not for 2801. Actually i have to do it in SRST mode.

Only the 3825 and 3845 support more phones in SRST than in
CCME mode. With
the 2801 you're stuck with 24 phones either way.

B.

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ttps://puck.nether.net/mailman/listinfo/cisco-voip

Just try what
max-ephones ?
says in IOS. that is your configurable limit.
I'm not sure what cisco says is the limitation for it, but I
have a 2811 
running 42 phones and a lot more than basic IP routing.
(full CME with 
DHCP, internal BGP, QoS etc.) Anyway, shouldn't the default
256M be 
enough? (can't find a straightforward way to check free
memory, but 
seems like 90-something MB is still free)
Then again, 2811 might have a 42 phone limit
"officially" as well.

regards,
Zoltan

zohaib shabir wrote:
> Dear All,
> I have a situation in which I have to add more than 24
IP Phones in
> 2801 .(The client has already purchased the router). I
know that Cisco
> Documentation says that we cannot add more than 24 IP
Phones in CME or
> SRST mode, but my question if I try to add more than 24
phones what
> will going to happen. will the router deny me in adding
more phones or
> will i be able to add more than 24 phones in CME or
srst.
>
>   

_______________________________________________
cisco-voip mailing list
cisco-voippuck.nether.net
h
ttps://puck.nether.net/mailman/listinfo/cisco-voip

I was recently told that 42 phones on a 2811 is a special
patch that will not last forever...
Do not depend on that limit..
As for 2801 and more-- 30 is set there.. BUT again this only
exists in some software releases...
I have not seen that on anything bigger than the 2811....

As always YMMV....
Later,
J



-----Original Message-----
From: cisco-voip-bouncespuck.nether.net
[mailto:cisco-voip-bouncespuck.nether.net] On Behalf
Of Kelemen Zoltan
Sent: Wednesday, November 28, 2007 3:16 AM
To: zohaib shabir
Cc: cisco-voippuck-nether.net List
Subject: Re: [cisco-voip] No. of IP Phones in CME or SRST

Just try what
max-ephones ?
says in IOS. that is your configurable limit.
I'm not sure what cisco says is the limitation for it, but I
have a 2811
running 42 phones and a lot more than basic IP routing.
(full CME with
DHCP, internal BGP, QoS etc.) Anyway, shouldn't the default
256M be
enough? (can't find a straightforward way to check free
memory, but
seems like 90-something MB is still free)
Then again, 2811 might have a 42 phone limit
"officially" as well.

regards,
Zoltan

zohaib shabir wrote:
> Dear All,
> I have a situation in which I have to add more than 24
IP Phones in
> 2801 .(The client has already purchased the router). I
know that Cisco
> Documentation says that we cannot add more than 24 IP
Phones in CME or
> SRST mode, but my question if I try to add more than 24
phones what
> will going to happen. will the router deny me in adding
more phones or
> will i be able to add more than 24 phones in CME or
srst.
>
>

_______________________________________________
cisco-voip mailing list
cisco-voippuck.nether.net
h
ttps://puck.nether.net/mailman/listinfo/cisco-voip
_______________________________________________
cisco-voip mailing list
cisco-voippuck.nether.net
h
ttps://puck.nether.net/mailman/listinfo/cisco-voip