Cisco 7925g how to install it in the network

F_A_H_D
F_A_H_D used Ask the Experts™
on
Hi.

we have cisco ip telephony consist of cisco call manager version 8 and IP phones extensions

and there is two VLAN one for voice VLAN-50 and Data VLAN-2

phones are taking IP addresses from catalyst 3750 switch and computers taking from another firewall with different IP subnet
Data has different subnet than the voice
i purchased WAP4410N-E access points and i installed it everywhere plus i created separate SSID for voice.

now the issue is that the cordless phones 7925g when i connect to the network through the access point it take IP address from the data gateway not from the 3750 catalyst !!
and even i configure the voice IP address manually it doesnt work at all
and when i configure the data IP address it works but when the cordless phones speak to each others they cannot hear each others

in my case what is the correct procedures and correct setup to setup the cordless in the voice vlan ?
Comment
Watch Question

Do more with

Expert Office
EXPERT OFFICE® is a registered trademark of EXPERTS EXCHANGE®
AkinsdNetwork Administrator

Commented:
Looks like you don't have a route between the vlans
You should also look into configuring IP Helper to ensure your DHCP server assigns the correct subnet to your phones.

Author

Commented:
ok
you know what
i configured the access point voice SSID to join the voice VLAN so now the cordless phones thanks god it takes the voice ip addresses like normal extensions

my problem now still cordless phones when they dial each others each one cannot hear speaker voice we keep say Hello Hello

any idea ?
AkinsdNetwork Administrator

Commented:
Most likely an issue with RTP setting or Codec mismatch
OWASP Proactive Controls

Learn the most important control and control categories that every architect and developer should include in their projects.

Author

Commented:
mmmm
FYI

cordless to normal phone its ok
normal extension to cordless its also ok
the problem only when it come to cordless to cordless they cannot hear each others
AkinsdNetwork Administrator

Commented:
That's a little weird
I guess you have rebooted them
Does the intercom work though?
I'm racking my brain here

Author

Commented:
no intercom configured
but FYI the extension numbers configured in the cordless phones already configured for normal phone
thats how i need the setup if some one calling you it should ring in your normal phone as well as the cordless
may be this is the reason ??? should i configure separate extensions and try it out ? or it doesnt make diff ?
AkinsdNetwork Administrator

Commented:
Is the ephone-dn a dual-line (shared line)?

Author

Commented:
no for the same person but we need to catch these people wherever they roam around

Author

Commented:
i tried to configure new DN but unfortunately same result !!
AkinsdNetwork Administrator

Commented:
I don't have a 7925G phone to test right now.
I would say focus on why the RTP connection between wireless phones are not working. I will research on this too to find out why, if the DNs are truly shared lines.

Author

Commented:
thank you man for your efforts
i posted also on cisco forums but no reply !!
AkinsdNetwork Administrator

Commented:
You're welcome
I'll let you know if I find something

Author

Commented:
you know i think the access point am using doesnt transfer RTP signals
i think i have to buy Aironet
AkinsdNetwork Administrator

Commented:
That is a possibility though.
On a second thought, the phone works between a land phone and the wireless so RTP tunnel must have been created for voice transfer which would mean the RTP traffic traverses wirelessly. Maybe a wireshark capture can reveal some good info.

Author

Commented:
do u think updating the phone firmware could help ?
Top Expert 2014

Commented:
Is the phone using power-save mode or constantly-awake?

Author

Commented:
power save mode

we are off today .. u know !! i will try something tomorrow

i will configure another access point , so i will have two access points and for each access point i will assign wireless phone and i will try to make a call .. i think it work because i think once wire connection appear in between it work fine

also i contacted the vendor he has to involve his cisco guys to check it
Top Expert 2014

Commented:
Try using CAM instead of power-save.  If you enable power-save the AP must do Proxy-ARP (and I don't think the 4400 does).

Author

Commented:
Finally it works ooohhh :)

i think 4400 doesnt transfer RTP directly between phones so i made each phone use one 4400 by that way i forced the signals to go through wires and finally it works

but the only problem that with each device i have to assign one 4400 :(
Network Administrator
Commented:
Excellent!
Major hurdle scaled.
I'll say  that's fine as long as it works for now.
Good catch

Do more with

Expert Office
Submit tech questions to Ask the Experts™ at any time to receive solutions, advice, and new ideas from leading industry professionals.

Start 7-Day Free Trial