Hi friends,
 
  I want to work with SIP on a LAN.
  For this today I have downloaded and installed SER on my local machine.  I have managed to login.
  However I am not able to dial up another user who has logged-in. Both of us are on the same LAN.   
 The error is "Remote part returned error response - 408- Request Timeout"

 I have kept the domain name as IP of my machine 10.0.0.101, where SER has been installed.
The output of  "select * from subscriber;" is as follows
+----------------------------------+----------+------------+----------+------------+-----------+-------+-------------------+---------------------+---------------------+------------------------------------------+------+------------------+----------+----------------------------------+----------------------------------+-------+------------+----------+---------+
| phplib_id                        | username | domain     | password | first_name | last_name | phone | email_address     | datetime_created    | datetime_modified   | confirmation                             | flag | sendnotification | greeting | ha1                              | ha1b                             | perms | allow_find | timezone | rpid    |
+----------------------------------+----------+------------+----------+------------+-----------+-------+-------------------+---------------------+---------------------+------------------------------------------+------+------------------+----------+----------------------------------+----------------------------------+-------+------------+----------+---------+
| ed679a94c2d06c2853e8eac7ccc12359 | john     | 10.0.0.101 | john     |            |           |       | johnv@aftek.com   | 2005-03-15 12:25:23 | 2005-03-15 12:26:35 |                                          | o    |                  |          | ed679a94c2d06c2853e8eac7ccc12359 | b4bf9c3408f165f59af7eb72438a8e95 | NULL  | 0          | NULL     | john    |
| b8ca68a4e7eafeb5e4c7ec9dc3a9eaf2 | sandeep  | 10.0.0.101 | sandeep  |            |           |       | sandeep@aftek.com | 2005-03-15 12:26:59 | 2005-03-15 12:27:18 |                                          | o    |                  |          | b8ca68a4e7eafeb5e4c7ec9dc3a9eaf2 | e6705f3068a0bf4c45a0ec2689d55b21 | NULL  | 0          | NULL     | sandeep |


I am pasting some lines from console of sip-communicator.sh

Call-ID: 224990ce9dffd68b151bc394f811f687@10.0.0.101
CSeq: 1 INVITE
From: "John Varghese" <sip:john@10.0.0.101:27882;transport=udp>;tag=22845412
To: <sip:sandeep@10.0.0.101>;tag=a6a1c5f60faecf035a1ae5b6e96e979a-c802
Via: SIP/2.0/UDP 10.0.0.101:27882;branch=z9hG4bK0de890eafa356f841c05dc95564ea035
Server: Sip EXpress router (0.8.14 (i386/linux))
Warning: 392 10.0.0.101:5060 "Noisy feedback tells:  pid=3784 req_src_ip=10.0.0.101 req_src_port=27882 in_uri=sip:sandeep@10.0.0.101 out_uri=sip:61.11.16.124:5060;transport=udp via_cnt==0"
Content-Length: 0



 Can anybody please help

John