[cisco-voip] No. of IP Phones in CME or SRST

[Lelio Fulgenzi]

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" <zohaibshabir at gmail.com>
To: "Voice Noob" <voicenoob at gmail.com>
Cc: <cisco-voip at puck.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 <voicenoob at gmail.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.diener at gmail.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 <zohaibshabir at gmail.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-voip at puck.nether.net
>> > > https://puck.nether.net/mailman/listinfo/cisco-voip
>> > >
>> > _______________________________________________
>> > cisco-voip mailing list
>> > cisco-voip at puck.nether.net
>> > https://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-voip at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-voip
>